(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
	typeof define === 'function' && define.amd ? define(factory) :
	(global = global || self, global.PagedPolyfill = factory());
}(this, function () { 'use strict';

	function createCommonjsModule(fn, module) {
		return module = { exports: {} }, fn(module, module.exports), module.exports;
	}

	function getCjsExportFromNamespace (n) {
		return n && n['default'] || n;
	}

	var isImplemented = function () {
		var assign = Object.assign, obj;
		if (typeof assign !== "function") return false;
		obj = { foo: "raz" };
		assign(obj, { bar: "dwa" }, { trzy: "trzy" });
		return (obj.foo + obj.bar + obj.trzy) === "razdwatrzy";
	};

	var isImplemented$1 = function () {
		try {
			return true;
		} catch (e) {
	 return false;
	}
	};

	// eslint-disable-next-line no-empty-function
	var noop = function () {};

	var _undefined = noop(); // Support ES3 engines

	var isValue = function (val) {
	 return (val !== _undefined) && (val !== null);
	};

	var keys = Object.keys;

	var shim = function (object) {
		return keys(isValue(object) ? Object(object) : object);
	};

	var keys$1 = isImplemented$1()
		? Object.keys
		: shim;

	var validValue = function (value) {
		if (!isValue(value)) throw new TypeError("Cannot use null or undefined");
		return value;
	};

	var max   = Math.max;

	var shim$1 = function (dest, src /*, …srcn*/) {
		var error, i, length = max(arguments.length, 2), assign;
		dest = Object(validValue(dest));
		assign = function (key) {
			try {
				dest[key] = src[key];
			} catch (e) {
				if (!error) error = e;
			}
		};
		for (i = 1; i < length; ++i) {
			src = arguments[i];
			keys$1(src).forEach(assign);
		}
		if (error !== undefined) throw error;
		return dest;
	};

	var assign = isImplemented()
		? Object.assign
		: shim$1;

	var forEach = Array.prototype.forEach, create = Object.create;

	var process = function (src, obj) {
		var key;
		for (key in src) obj[key] = src[key];
	};

	// eslint-disable-next-line no-unused-vars
	var normalizeOptions = function (opts1 /*, …options*/) {
		var result = create(null);
		forEach.call(arguments, function (options) {
			if (!isValue(options)) return;
			process(Object(options), result);
		});
		return result;
	};

	// Deprecated

	var isCallable = function (obj) {
	 return typeof obj === "function";
	};

	var str = "razdwatrzy";

	var isImplemented$2 = function () {
		if (typeof str.contains !== "function") return false;
		return (str.contains("dwa") === true) && (str.contains("foo") === false);
	};

	var indexOf = String.prototype.indexOf;

	var shim$2 = function (searchString/*, position*/) {
		return indexOf.call(this, searchString, arguments[1]) > -1;
	};

	var contains = isImplemented$2()
		? String.prototype.contains
		: shim$2;

	var d_1 = createCommonjsModule(function (module) {

	var d;

	d = module.exports = function (dscr, value/*, options*/) {
		var c, e, w, options, desc;
		if ((arguments.length < 2) || (typeof dscr !== 'string')) {
			options = value;
			value = dscr;
			dscr = null;
		} else {
			options = arguments[2];
		}
		if (dscr == null) {
			c = w = true;
			e = false;
		} else {
			c = contains.call(dscr, 'c');
			e = contains.call(dscr, 'e');
			w = contains.call(dscr, 'w');
		}

		desc = { value: value, configurable: c, enumerable: e, writable: w };
		return !options ? desc : assign(normalizeOptions(options), desc);
	};

	d.gs = function (dscr, get, set/*, options*/) {
		var c, e, options, desc;
		if (typeof dscr !== 'string') {
			options = set;
			set = get;
			get = dscr;
			dscr = null;
		} else {
			options = arguments[3];
		}
		if (get == null) {
			get = undefined;
		} else if (!isCallable(get)) {
			options = get;
			get = set = undefined;
		} else if (set == null) {
			set = undefined;
		} else if (!isCallable(set)) {
			options = set;
			set = undefined;
		}
		if (dscr == null) {
			c = true;
			e = false;
		} else {
			c = contains.call(dscr, 'c');
			e = contains.call(dscr, 'e');
		}

		desc = { get: get, set: set, configurable: c, enumerable: e };
		return !options ? desc : assign(normalizeOptions(options), desc);
	};
	});

	var validCallable = function (fn) {
		if (typeof fn !== "function") throw new TypeError(fn + " is not a function");
		return fn;
	};

	var eventEmitter = createCommonjsModule(function (module, exports) {

	var apply = Function.prototype.apply, call = Function.prototype.call
	  , create = Object.create, defineProperty = Object.defineProperty
	  , defineProperties = Object.defineProperties
	  , hasOwnProperty = Object.prototype.hasOwnProperty
	  , descriptor = { configurable: true, enumerable: false, writable: true }

	  , on, once, off, emit, methods, descriptors, base;

	on = function (type, listener) {
		var data;

		validCallable(listener);

		if (!hasOwnProperty.call(this, '__ee__')) {
			data = descriptor.value = create(null);
			defineProperty(this, '__ee__', descriptor);
			descriptor.value = null;
		} else {
			data = this.__ee__;
		}
		if (!data[type]) data[type] = listener;
		else if (typeof data[type] === 'object') data[type].push(listener);
		else data[type] = [data[type], listener];

		return this;
	};

	once = function (type, listener) {
		var once, self;

		validCallable(listener);
		self = this;
		on.call(this, type, once = function () {
			off.call(self, type, once);
			apply.call(listener, this, arguments);
		});

		once.__eeOnceListener__ = listener;
		return this;
	};

	off = function (type, listener) {
		var data, listeners, candidate, i;

		validCallable(listener);

		if (!hasOwnProperty.call(this, '__ee__')) return this;
		data = this.__ee__;
		if (!data[type]) return this;
		listeners = data[type];

		if (typeof listeners === 'object') {
			for (i = 0; (candidate = listeners[i]); ++i) {
				if ((candidate === listener) ||
						(candidate.__eeOnceListener__ === listener)) {
					if (listeners.length === 2) data[type] = listeners[i ? 0 : 1];
					else listeners.splice(i, 1);
				}
			}
		} else {
			if ((listeners === listener) ||
					(listeners.__eeOnceListener__ === listener)) {
				delete data[type];
			}
		}

		return this;
	};

	emit = function (type) {
		var i, l, listener, listeners, args;

		if (!hasOwnProperty.call(this, '__ee__')) return;
		listeners = this.__ee__[type];
		if (!listeners) return;

		if (typeof listeners === 'object') {
			l = arguments.length;
			args = new Array(l - 1);
			for (i = 1; i < l; ++i) args[i - 1] = arguments[i];

			listeners = listeners.slice();
			for (i = 0; (listener = listeners[i]); ++i) {
				apply.call(listener, this, args);
			}
		} else {
			switch (arguments.length) {
			case 1:
				call.call(listeners, this);
				break;
			case 2:
				call.call(listeners, this, arguments[1]);
				break;
			case 3:
				call.call(listeners, this, arguments[1], arguments[2]);
				break;
			default:
				l = arguments.length;
				args = new Array(l - 1);
				for (i = 1; i < l; ++i) {
					args[i - 1] = arguments[i];
				}
				apply.call(listeners, this, args);
			}
		}
	};

	methods = {
		on: on,
		once: once,
		off: off,
		emit: emit
	};

	descriptors = {
		on: d_1(on),
		once: d_1(once),
		off: d_1(off),
		emit: d_1(emit)
	};

	base = defineProperties({}, descriptors);

	module.exports = exports = function (o) {
		return (o == null) ? create(base) : defineProperties(Object(o), descriptors);
	};
	exports.methods = methods;
	});
	var eventEmitter_1 = eventEmitter.methods;

	function getBoundingClientRect(element) {
		if (!element) {
			return;
		}
		let rect;
		if (typeof element.getBoundingClientRect !== "undefined") {
			rect = element.getBoundingClientRect();
		} else {
			let range = document.createRange();
			range.selectNode(element);
			rect = range.getBoundingClientRect();
		}
		return rect;
	}

	function getClientRects(element) {
		if (!element) {
			return;
		}
		let rect;
		if (typeof element.getClientRects !== "undefined") {
			rect = element.getClientRects();
		} else {
			let range = document.createRange();
			range.selectNode(element);
			rect = range.getClientRects();
		}
		return rect;
	}

	/**
	 * Generates a UUID
	 * based on: http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript
	 * @returns {string} uuid
	 */
	function UUID() {
		var d = new Date().getTime();
		if (typeof performance !== "undefined" && typeof performance.now === "function"){
			d += performance.now(); //use high-precision timer if available
		}
		return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function (c) {
			var r = (d + Math.random() * 16) % 16 | 0;
			d = Math.floor(d / 16);
			return (c === "x" ? r : (r & 0x3 | 0x8)).toString(16);
		});
	}

	function attr(element, attributes) {
		for (var i = 0; i < attributes.length; i++) {
			if(element.hasAttribute(attributes[i])) {
				return element.getAttribute(attributes[i]);
			}
		}
	}

	/* Based on by https://mths.be/cssescape v1.5.1 by @mathias | MIT license
	 * Allows # and .
	 */
	function querySelectorEscape(value) {
		if (arguments.length == 0) {
			throw new TypeError("`CSS.escape` requires an argument.");
		}
		var string = String(value);
		var length = string.length;
		var index = -1;
		var codeUnit;
		var result = "";
		var firstCodeUnit = string.charCodeAt(0);
		while (++index < length) {
			codeUnit = string.charCodeAt(index);
			// Note: there’s no need to special-case astral symbols, surrogate
			// pairs, or lone surrogates.

			// If the character is NULL (U+0000), then the REPLACEMENT CHARACTER
			// (U+FFFD).
			if (codeUnit == 0x0000) {
				result += "\uFFFD";
				continue;
			}

			if (
				// If the character is in the range [\1-\1F] (U+0001 to U+001F) or is
				// U+007F, […]
				(codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F ||
				// If the character is the first character and is in the range [0-9]
				// (U+0030 to U+0039), […]
				(index == 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) ||
				// If the character is the second character and is in the range [0-9]
				// (U+0030 to U+0039) and the first character is a `-` (U+002D), […]
				(
					index == 1 &&
					codeUnit >= 0x0030 && codeUnit <= 0x0039 &&
					firstCodeUnit == 0x002D
				)
			) {
				// https://drafts.csswg.org/cssom/#escape-a-character-as-code-point
				result += "\\" + codeUnit.toString(16) + " ";
				continue;
			}

			if (
				// If the character is the first character and is a `-` (U+002D), and
				// there is no second character, […]
				index == 0 &&
				length == 1 &&
				codeUnit == 0x002D
			) {
				result += "\\" + string.charAt(index);
				continue;
			}

			// If the character is not handled by one of the above rules and is
			// greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or
			// is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to
			// U+005A), or [a-z] (U+0061 to U+007A), […]
			if (
				codeUnit >= 0x0080 ||
				codeUnit == 0x002D ||
				codeUnit == 0x005F ||
				codeUnit == 35 || // Allow #
				codeUnit == 46 || // Allow .
				codeUnit >= 0x0030 && codeUnit <= 0x0039 ||
				codeUnit >= 0x0041 && codeUnit <= 0x005A ||
				codeUnit >= 0x0061 && codeUnit <= 0x007A
			) {
				// the character itself
				result += string.charAt(index);
				continue;
			}

			// Otherwise, the escaped character.
			// https://drafts.csswg.org/cssom/#escape-a-character
			result += "\\" + string.charAt(index);

		}
		return result;
	}

	/**
	 * Creates a new pending promise and provides methods to resolve or reject it.
	 * From: https://developer.mozilla.org/en-US/docs/Mozilla/JavaScript_code_modules/Promise.jsm/Deferred#backwards_forwards_compatible
	 * @returns {object} defered
	 */
	function defer() {
		this.resolve = null;

		this.reject = null;

		this.id = UUID();

		this.promise = new Promise((resolve, reject) => {
			this.resolve = resolve;
			this.reject = reject;
		});
		Object.freeze(this);
	}

	const requestIdleCallback = typeof window !== "undefined" && ("requestIdleCallback" in window ? window.requestIdleCallback : window.requestAnimationFrame);

	function CSSValueToString(obj) {
		return obj.value + (obj.unit || "");
	}

	function isElement(node) {
		return node && node.nodeType === 1;
	}

	function isText(node) {
		return node && node.nodeType === 3;
	}

	function *walk(start, limiter) {
		let node = start;

		while (node) {

			yield node;

			if (node.childNodes.length) {
				node = node.firstChild;
			} else if (node.nextSibling) {
				if (limiter && node === limiter) {
					node = undefined;
					break;
				}
				node = node.nextSibling;
			} else {
				while (node) {
					node = node.parentNode;
					if (limiter && node === limiter) {
						node = undefined;
						break;
					}
					if (node && node.nextSibling) {
						node = node.nextSibling;
						break;
					}

				}
			}
		}
	}

	function nodeAfter(node, limiter) {
		let after = node;

		if (after.nextSibling) {
			if (limiter && node === limiter) {
				return;
			}
			after = after.nextSibling;
		} else {
			while (after) {
				after = after.parentNode;
				if (limiter && after === limiter) {
					after = undefined;
					break;
				}
				if (after && after.nextSibling) {
					after = after.nextSibling;
					break;
				}
			}
		}

		return after;
	}

	function nodeBefore(node, limiter) {
		let before = node;
		if (before.previousSibling) {
			if (limiter && node === limiter) {
				return;
			}
			before = before.previousSibling;
		} else {
			while (before) {
				before = before.parentNode;
				if (limiter && before === limiter) {
					before = undefined;
					break;
				}
				if (before && before.previousSibling) {
					before = before.previousSibling;
					break;
				}
			}
		}

		return before;
	}

	function elementAfter(node, limiter) {
		let after = nodeAfter(node);

		while (after && after.nodeType !== 1) {
			after = nodeAfter(after);
		}

		return after;
	}

	function rebuildAncestors(node) {
		let parent, ancestor;
		let ancestors = [];
		let added = [];

		let fragment = document.createDocumentFragment();

		// Gather all ancestors
		let element = node;
		while(element.parentNode && element.parentNode.nodeType === 1) {
			ancestors.unshift(element.parentNode);
			element = element.parentNode;
		}

		for (var i = 0; i < ancestors.length; i++) {
			ancestor = ancestors[i];
			parent = ancestor.cloneNode(false);

			parent.setAttribute("data-split-from", parent.getAttribute("data-ref"));
			// ancestor.setAttribute("data-split-to", parent.getAttribute("data-ref"));

			if (parent.hasAttribute("id")) {
				let dataID = parent.getAttribute("id");
				parent.setAttribute("data-id", dataID);
				parent.removeAttribute("id");
			}

			// This is handled by css :not, but also tidied up here
			if (parent.hasAttribute("data-break-before")) {
				parent.removeAttribute("data-break-before");
			}

			if (parent.hasAttribute("data-previous-break-after")) {
				parent.removeAttribute("data-previous-break-after");
			}

			if (added.length) {
				let container = added[added.length-1];
				container.appendChild(parent);
			} else {
				fragment.appendChild(parent);
			}
			added.push(parent);
		}

		added = undefined;
		return fragment;
	}

	/*
	export function split(bound, cutElement, breakAfter) {
			let needsRemoval = [];
			let index = indexOf(cutElement);

			if (!breakAfter && index === 0) {
				return;
			}

			if (breakAfter && index === (cutElement.parentNode.children.length - 1)) {
				return;
			}

			// Create a fragment with rebuilt ancestors
			let fragment = rebuildAncestors(cutElement);

			// Clone cut
			if (!breakAfter) {
				let clone = cutElement.cloneNode(true);
				let ref = cutElement.parentNode.getAttribute('data-ref');
				let parent = fragment.querySelector("[data-ref='" + ref + "']");
				parent.appendChild(clone);
				needsRemoval.push(cutElement);
			}

			// Remove all after cut
			let next = nodeAfter(cutElement, bound);
			while (next) {
				let clone = next.cloneNode(true);
				let ref = next.parentNode.getAttribute('data-ref');
				let parent = fragment.querySelector("[data-ref='" + ref + "']");
				parent.appendChild(clone);
				needsRemoval.push(next);
				next = nodeAfter(next, bound);
			}

			// Remove originals
			needsRemoval.forEach((node) => {
				if (node) {
					node.remove();
				}
			});

			// Insert after bounds
			bound.parentNode.insertBefore(fragment, bound.nextSibling);
			return [bound, bound.nextSibling];
	}
	*/

	function needsBreakBefore(node) {
		if( typeof node !== "undefined" &&
				typeof node.dataset !== "undefined" &&
				typeof node.dataset.breakBefore !== "undefined" &&
				(node.dataset.breakBefore === "always" ||
				 node.dataset.breakBefore === "page" ||
				 node.dataset.breakBefore === "left" ||
				 node.dataset.breakBefore === "right" ||
				 node.dataset.breakBefore === "recto" ||
				 node.dataset.breakBefore === "verso")
			 ) {
			return true;
		}

		return false;
	}

	function needsPreviousBreakAfter(node) {
		if( typeof node !== "undefined" &&
				typeof node.dataset !== "undefined" &&
				typeof node.dataset.previousBreakAfter !== "undefined" &&
				(node.dataset.previousBreakAfter === "always" ||
				 node.dataset.previousBreakAfter === "page" ||
				 node.dataset.previousBreakAfter === "left" ||
				 node.dataset.previousBreakAfter === "right" ||
				 node.dataset.previousBreakAfter === "recto" ||
				 node.dataset.previousBreakAfter === "verso")
			 ) {
			return true;
		}

		return false;
	}

	function needsPageBreak(node) {
		if( typeof node !== "undefined" &&
				typeof node.dataset !== "undefined" &&
				(node.dataset.page || node.dataset.afterPage)
			 ) {
			return true;
		}

		return false;
	}

	function *words(node) {
		let currentText = node.nodeValue;
		let max = currentText.length;
		let currentOffset = 0;
		let currentLetter;

		let range;

		while(currentOffset < max) {
			currentLetter = currentText[currentOffset];
			if (/^[\S\u202F\u00A0]$/.test(currentLetter)) {
				if (!range) {
					range = document.createRange();
					range.setStart(node, currentOffset);
				}
			} else {
				if (range) {
					range.setEnd(node, currentOffset);
					yield range;
					range = undefined;
				}
			}

			currentOffset += 1;
		}

		if (range) {
			range.setEnd(node, currentOffset);
			yield range;
			range = undefined;
		}
	}

	function *letters(wordRange) {
		let currentText = wordRange.startContainer;
		let max = currentText.length;
		let currentOffset = wordRange.startOffset;
		// let currentLetter;

		let range;

		while(currentOffset < max) {
			 // currentLetter = currentText[currentOffset];
			 range = document.createRange();
			 range.setStart(currentText, currentOffset);
			 range.setEnd(currentText, currentOffset+1);

			 yield range;

			 currentOffset += 1;
		}
	}

	function isContainer(node) {
		let container;

		if (typeof node.tagName === "undefined") {
			return true;
		}

		if (node.style.display === "none") {
			return false;
		}

		switch (node.tagName) {
			// Inline
			case "A":
			case "ABBR":
			case "ACRONYM":
			case "B":
			case "BDO":
			case "BIG":
			case "BR":
			case "BUTTON":
			case "CITE":
			case "CODE":
			case "DFN":
			case "EM":
			case "I":
			case "IMG":
			case "INPUT":
			case "KBD":
			case "LABEL":
			case "MAP":
			case "OBJECT":
			case "Q":
			case "SAMP":
			case "SCRIPT":
			case "SELECT":
			case "SMALL":
			case "SPAN":
			case "STRONG":
			case "SUB":
			case "SUP":
			case "TEXTAREA":
			case "TIME":
			case "TT":
			case "VAR":
			case "P":
			case "H1":
			case "H2":
			case "H3":
			case "H4":
			case "H5":
			case "H6":
			case "FIGCAPTION":
			case "BLOCKQUOTE":
			case "PRE":
			case "LI":
			case "TR":
			case "DT":
			case "DD":
			case "VIDEO":
			case "CANVAS":
				container = false;
				break;
			default:
				container = true;
		}

		return container;
	}

	function cloneNode(n, deep=false) {
		return n.cloneNode(deep);
	}

	function findElement(node, doc) {
		const ref = node.getAttribute("data-ref");
		return findRef(ref, doc);
	}

	function findRef(ref, doc) {
		return doc.querySelector(`[data-ref='${ref}']`);
	}

	function validNode(node) {
		if (isText(node)) {
			return true;
		}

		if (isElement(node) && node.dataset.ref) {
			return true;
		}

		return false;
	}

	function prevValidNode(node) {
		while (!validNode(node)) {
			if (node.previousSibling) {
				node = node.previousSibling;
			} else {
				node = node.parentNode;
			}

			if (!node) {
				break;
			}
		}

		return node;
	}


	function indexOf$1(node) {
		let parent = node.parentNode;
		if (!parent) {
			return 0;
		}
		return Array.prototype.indexOf.call(parent.childNodes, node);
	}

	function child(node, index) {
		return node.childNodes[index];
	}

	function hasContent(node) {
		if (isElement(node)) {
			return true;
		} else if (isText(node) &&
				node.textContent.trim().length) {
			return true;
		}
		return false;
	}

	function indexOfTextNode(node, parent) {
		if (!isText(node)) {
			return -1;
		}
		let nodeTextContent = node.textContent;
		let child;
		let index = -1;
		for (var i = 0; i < parent.childNodes.length; i++) {
			child = parent.childNodes[i];
			if (child.nodeType === 3) {
				let text = parent.childNodes[i].textContent;
				if (text.includes(nodeTextContent)) {
					index = i;
					break;
				}
			}
		}

		return index;
	}

	/**
	 * Hooks allow for injecting functions that must all complete in order before finishing
	 * They will execute in parallel but all must finish before continuing
	 * Functions may return a promise if they are asycn.
	 * From epubjs/src/utils/hooks
	 * @param {any} context scope of this
	 * @example this.content = new Hook(this);
	 */
	class Hook {
		constructor(context){
			this.context = context || this;
			this.hooks = [];
		}

		/**
		 * Adds a function to be run before a hook completes
		 * @example this.content.register(function(){...});
		 * @return {undefined} void
		 */
		register(){
			for(var i = 0; i < arguments.length; ++i) {
				if (typeof arguments[i]  === "function") {
					this.hooks.push(arguments[i]);
				} else {
					// unpack array
					for(var j = 0; j < arguments[i].length; ++j) {
						this.hooks.push(arguments[i][j]);
					}
				}
			}
		}

		/**
		 * Triggers a hook to run all functions
		 * @example this.content.trigger(args).then(function(){...});
		 * @return {Promise} results
		 */
		trigger(){
			var args = arguments;
			var context = this.context;
			var promises = [];

			this.hooks.forEach(function(task) {
				var executing = task.apply(context, args);

				if(executing && typeof executing["then"] === "function") {
					// Task is a function that returns a promise
					promises.push(executing);
				}
				// Otherwise Task resolves immediately, add resolved promise with result
				promises.push(new Promise((resolve, reject) => {
					resolve(executing);
				}));
			});


			return Promise.all(promises);
		}

	  /**
	   * Triggers a hook to run all functions synchronously
	   * @example this.content.trigger(args).then(function(){...});
	   * @return {Array} results
	   */
	  triggerSync(){
	    var args = arguments;
	    var context = this.context;
	    var results = [];

	    this.hooks.forEach(function(task) {
	      var executing = task.apply(context, args);

	      results.push(executing);
	    });


	    return results;
	  }

		// Adds a function to be run before a hook completes
		list(){
			return this.hooks;
		}

		clear(){
			return this.hooks = [];
		}
	}

	const MAX_CHARS_PER_BREAK = 1500;

	/**
	 * Layout
	 * @class
	 */
	class Layout {

		constructor(element, hooks, maxChars) {
			this.element = element;

			this.bounds = this.element.getBoundingClientRect();

			if (hooks) {
				this.hooks = hooks;
			} else {
				this.hooks = {};
				this.hooks.layout = new Hook();
				this.hooks.renderNode = new Hook();
				this.hooks.layoutNode = new Hook();
				this.hooks.beforeOverflow = new Hook();
				this.hooks.onOverflow = new Hook();
				this.hooks.onBreakToken = new Hook();
			}

			this.maxChars = maxChars || MAX_CHARS_PER_BREAK;
		}

		async renderTo(wrapper, source, breakToken, bounds=this.bounds) {
			let start = this.getStart(source, breakToken);
			let walker = walk(start, source);

			let node;
			let done;
			let next;

			let hasRenderedContent = false;
			let newBreakToken;

			let length = 0;

			while (!done && !newBreakToken) {
				next = walker.next();
				node = next.value;
				done = next.done;

				if (!node) {
					this.hooks && this.hooks.layout.trigger(wrapper, this);

					let imgs = wrapper.querySelectorAll("img");
					if (imgs.length) {
						await this.waitForImages(imgs);
					}

					newBreakToken = this.findBreakToken(wrapper, source, bounds);
					return newBreakToken;
				}

				this.hooks && this.hooks.layoutNode.trigger(node);

				// Check if the rendered element has a break set
				if (hasRenderedContent && this.shouldBreak(node)) {

					this.hooks && this.hooks.layout.trigger(wrapper, this);

					let imgs = wrapper.querySelectorAll("img");
					if (imgs.length) {
						await this.waitForImages(imgs);
					}

					newBreakToken = this.findBreakToken(wrapper, source, bounds);

					if (!newBreakToken) {
						newBreakToken = this.breakAt(node);
					}

					length = 0;

					break;
				}

				// Should the Node be a shallow or deep clone
				let shallow = isContainer(node);

				let rendered = this.append(node, wrapper, breakToken, shallow);

				length += rendered.textContent.length;

				// Check if layout has content yet
				if (!hasRenderedContent) {
					hasRenderedContent = hasContent(node);
				}

				// Skip to the next node if a deep clone was rendered
				if (!shallow) {
					walker = walk(nodeAfter(node, source), source);
				}

				// Only check x characters
				if (length >= this.maxChars) {

					this.hooks && this.hooks.layout.trigger(wrapper, this);

					let imgs = wrapper.querySelectorAll("img");
					if (imgs.length) {
						await this.waitForImages(imgs);
					}

					newBreakToken = this.findBreakToken(wrapper, source, bounds);

					if (newBreakToken) {
						length = 0;
					}
				}

			}

			return newBreakToken;
		}

		breakAt(node, offset=0) {
			return {
				node,
				offset
			};
		}

		shouldBreak(node) {
			let previousSibling = node.previousSibling;
			let parentNode = node.parentNode;
			let parentBreakBefore = needsBreakBefore(node) && parentNode && !previousSibling && needsBreakBefore(parentNode);
			let doubleBreakBefore;

			if (parentBreakBefore) {
				doubleBreakBefore = node.dataset.breakBefore === parentNode.dataset.breakBefore;
			}

			return !doubleBreakBefore && needsBreakBefore(node) || needsPreviousBreakAfter(node) || needsPageBreak(node);
		}

		getStart(source, breakToken) {
			let start;
			let node = breakToken && breakToken.node;

			if (node) {
				start = node;
			} else {
				start = source.firstChild;
			}

			return start;
		}

		append(node, dest, breakToken, shallow=true, rebuild=true) {

			let clone = cloneNode(node, !shallow);

			if (node.parentNode && isElement(node.parentNode)) {
				let parent = findElement(node.parentNode, dest);
				// Rebuild chain
				if (parent) {
					parent.appendChild(clone);
				} else if (rebuild) {
					let fragment = rebuildAncestors(node);
					parent = findElement(node.parentNode, fragment);
					if (!parent) {
						dest.appendChild(clone);
					} else if (breakToken && isText(breakToken.node) && breakToken.offset > 0) {
						clone.textContent = clone.textContent.substring(breakToken.offset);
						parent.appendChild(clone);
					} else {
						parent.appendChild(clone);
					}

					dest.appendChild(fragment);
				} else {
					dest.appendChild(clone);
				}


			} else {
				dest.appendChild(clone);
			}

			let nodeHooks = this.hooks.renderNode.triggerSync(clone, node);
			nodeHooks.forEach((newNode) => {
				if (typeof newNode != "undefined") {
					clone = newNode;
				}
			});

			return clone;
		}

		async waitForImages(imgs) {
			let results = Array.from(imgs).map(async (img) => {
				return this.awaitImageLoaded(img);
			});
			await Promise.all(results);
		}

		async awaitImageLoaded(image) {
			return new Promise(resolve => {
				if (image.complete !== true) {
					image.onload = function() {
						let { width, height } = window.getComputedStyle(image);
						resolve(width, height);
					};
					image.onerror = function(e) {
						let { width, height } = window.getComputedStyle(image);
						resolve(width, height, e);
					};
				} else {
					let { width, height } = window.getComputedStyle(image);
					resolve(width, height);
				}
			});
		}

		avoidBreakInside(node, limiter) {
			let breakNode;

			if (node === limiter) {
				return;
			}

			while (node.parentNode) {
				node = node.parentNode;

				if (node === limiter) {
					break;
				}

				if(window.getComputedStyle(node)["break-inside"] === "avoid") {
					breakNode = node;
					break;
				}

			}
			return breakNode;
		}

		createBreakToken(overflow, rendered, source) {
			let container = overflow.startContainer;
			let offset = overflow.startOffset;
			let node, renderedNode, parent, index, temp;

			if (isElement(container)) {
				temp = child(container, offset);

				if (isElement(temp)) {
					renderedNode = findElement(temp, rendered);

					if (!renderedNode) {
						// Find closest element with data-ref
						renderedNode = findElement(prevValidNode(temp), rendered);
						return;
					}

					node = findElement(renderedNode, source);
					offset = 0;
				} else {
					renderedNode = findElement(container, rendered);

					if (!renderedNode) {
						renderedNode = findElement(prevValidNode(container), rendered);
					}

					parent = findElement(renderedNode, source);
					index = indexOfTextNode(temp, parent);
					node = child(parent, index);
					offset = 0;
				}
			} else {
				renderedNode = findElement(container.parentNode, rendered);

				if (!renderedNode) {
					renderedNode = findElement(prevValidNode(container.parentNode), rendered);
				}

				parent = findElement(renderedNode, source);
				index = indexOfTextNode(container, parent);

				if (index === -1) {
					return;
				}

				node = child(parent, index);

				offset += node.textContent.indexOf(container.textContent);
			}

			if (!node) {
				return;
			}

			return {
				node,
				offset
			};

		}

		findBreakToken(rendered, source, bounds=this.bounds, extract=true) {
			let overflow = this.findOverflow(rendered, bounds);
			let breakToken;

			let overflowHooks = this.hooks.onOverflow.triggerSync(overflow, rendered, bounds, this);
			overflowHooks.forEach((newOverflow) => {
				if (typeof newOverflow != "undefined") {
					overflow = newOverflow;
				}
			});

			if (overflow) {
				breakToken = this.createBreakToken(overflow, rendered, source);

				let breakHooks = this.hooks.onBreakToken.triggerSync(breakToken, overflow, rendered, this);
				breakHooks.forEach((newToken) => {
					if (typeof newToken != "undefined") {
						breakToken = newToken;
					}
				});


				if (breakToken && breakToken.node && extract) {
					this.removeOverflow(overflow);
				}

			}
			return breakToken;
		}

		hasOverflow(element, bounds=this.bounds) {
			let constrainingElement = element && element.parentNode; // this gets the element, instead of the wrapper for the width workaround
			let { width } = element.getBoundingClientRect();
			let scrollWidth = constrainingElement ? constrainingElement.scrollWidth : 0;
			return Math.max(Math.floor(width), scrollWidth) > Math.round(bounds.width);
		}

		findOverflow(rendered, bounds=this.bounds) {
			if (!this.hasOverflow(rendered, bounds)) return;

			let start = Math.round(bounds.left);
			let end =  Math.round(bounds.right);
			let range;

			let walker = walk(rendered.firstChild, rendered);

			// Find Start
			let next, done, node, offset, skip, breakAvoid, prev, br;
			while (!done) {
				next = walker.next();
				done = next.done;
				node = next.value;
				skip = false;
				breakAvoid = false;
				prev = undefined;
				br = undefined;

				if (node) {
					let pos = getBoundingClientRect(node);
					let left = Math.floor(pos.left);
					let right = Math.floor(pos.right);

					if (!range && left >= end) {
						// Check if it is a float
						let isFloat = false;

						if (isElement(node) ) {
							let styles = window.getComputedStyle(node);
							isFloat = styles.getPropertyValue("float") !== "none";
							skip = styles.getPropertyValue("break-inside") === "avoid";
							breakAvoid = node.dataset.breakBefore === "avoid" || node.dataset.previousBreakAfter === "avoid";
							prev = breakAvoid && nodeBefore(node, rendered);
							br = node.tagName === "BR" || node.tagName === "WBR";
						}

						if (prev) {
							range = document.createRange();
							range.setStartBefore(prev);
							break;
						}

						if (!br && !isFloat && isElement(node)) {
							range = document.createRange();
							range.setStartBefore(node);
							break;
						}

						if (isText(node) && node.textContent.trim().length) {
							range = document.createRange();
							range.setStartBefore(node);
							break;
						}

					}

					if (!range && isText(node) &&
							node.textContent.trim().length &&
							window.getComputedStyle(node.parentNode)["break-inside"] !== "avoid") {

						let rects = getClientRects(node);
						let rect;
						left = 0;
						for (var i = 0; i != rects.length; i++) {
							rect = rects[i];
							if (rect.width > 0 && (!left || rect.left > left)) {
								left = rect.left;
							}
						}

						if(left >= end) {
							range = document.createRange();
							offset = this.textBreak(node, start, end);
							if (!offset) {
								range = undefined;
							} else {
								range.setStart(node, offset);
							}
							break;
						}
					}

					// Skip children
					if (skip || right < end) {
						next = nodeAfter(node, rendered);
						if (next) {
							walker = walk(next, rendered);
						}

					}

				}
			}

			// Find End
			if (range) {
				range.setEndAfter(rendered.lastChild);
				return range;
			}

		}

		findEndToken(rendered, source, bounds=this.bounds) {
			if (rendered.childNodes.length === 0) {
				return;
			}

			let lastChild = rendered.lastChild;

			let lastNodeIndex;
			while (lastChild && lastChild.lastChild) {
				if (!validNode(lastChild)) {
					// Only get elements with refs
					lastChild = lastChild.previousSibling;
				} else if(!validNode(lastChild.lastChild)) {
					// Deal with invalid dom items
					lastChild = prevValidNode(lastChild.lastChild);
					break;
				} else {
					lastChild = lastChild.lastChild;
				}
			}

			if (isText(lastChild)) {

				if (lastChild.parentNode.dataset.ref) {
					lastNodeIndex = indexOf$1(lastChild);
					lastChild = lastChild.parentNode;
				} else {
					lastChild = lastChild.previousSibling;
				}
			}

			let original = findElement(lastChild, source);

			if (lastNodeIndex) {
				original = original.childNodes[lastNodeIndex];
			}

			let after = nodeAfter(original);

			return this.breakAt(after);
		}

		textBreak(node, start, end) {
			let wordwalker = words(node);
			let left = 0;
			let right = 0;
			let word, next, done, pos;
			let offset;
			while (!done) {
				next = wordwalker.next();
				word = next.value;
				done = next.done;

				if (!word) {
					break;
				}

				pos = getBoundingClientRect(word);

				left = Math.floor(pos.left);
				right = Math.floor(pos.right);

				if (left >= end) {
					offset = word.startOffset;
					break;
				}

				if (right > end) {
					let letterwalker = letters(word);
					let letter, nextLetter, doneLetter;

					while (!doneLetter) {
						nextLetter = letterwalker.next();
						letter = nextLetter.value;
						doneLetter = nextLetter.done;

						if (!letter) {
							break;
						}

						pos = getBoundingClientRect(letter);
						left = Math.floor(pos.left);

						if (left >= end) {
							offset = letter.startOffset;
							done = true;

							break;
						}
					}
				}

			}

			return offset;
		}

		removeOverflow(overflow) {
			let {startContainer} = overflow;
			let extracted = overflow.extractContents();

			this.hyphenateAtBreak(startContainer);

			return extracted;
		}

		hyphenateAtBreak(startContainer) {
			if (isText(startContainer)) {
				let startText = startContainer.textContent;
				let prevLetter = startText[startText.length-1];

				// Add a hyphen if previous character is a letter or soft hyphen
				if (/^\w|\u00AD$/.test(prevLetter)) {
					startContainer.parentNode.classList.add("pagedjs_hyphen");
					startContainer.textContent += "\u2011";
				}
			}
		}
	}

	eventEmitter(Layout.prototype);

	/**
	 * Render a page
	 * @class
	 */
	class Page {
		constructor(pagesArea, pageTemplate, blank, hooks) {
			this.pagesArea = pagesArea;
			this.pageTemplate = pageTemplate;
			this.blank = blank;

			this.width = undefined;
			this.height = undefined;

			this.hooks = hooks;

			// this.element = this.create(this.pageTemplate);
		}

		create(template, after) {
			//let documentFragment = document.createRange().createContextualFragment( TEMPLATE );
			//let page = documentFragment.children[0];
			let clone = document.importNode(this.pageTemplate.content, true);

			let page, index;
			if (after) {
				this.pagesArea.insertBefore(clone, after.nextElementSibling);
				index = Array.prototype.indexOf.call(this.pagesArea.children, after.nextElementSibling);
				page = this.pagesArea.children[index];
			} else {
				this.pagesArea.appendChild(clone);
				page = this.pagesArea.lastChild;
			}

			let pagebox = page.querySelector(".pagedjs_pagebox");
			let area = page.querySelector(".pagedjs_page_content");


			let size = area.getBoundingClientRect();


			area.style.columnWidth = Math.round(size.width) + "px";
			area.style.columnGap = "calc(var(--pagedjs-margin-right) + var(--pagedjs-margin-left))";
			// area.style.overflow = "scroll";

			this.width = Math.round(size.width);
			this.height = Math.round(size.height);

			this.element = page;
			this.pagebox = pagebox;
			this.area = area;

			return page;
		}

		createWrapper() {
			let wrapper = document.createElement("div");

			this.area.appendChild(wrapper);

			this.wrapper = wrapper;

			return wrapper;
		}

		index(pgnum) {
			this.position = pgnum;

			let page = this.element;
			// let pagebox = this.pagebox;

			let index = pgnum+1;

			let id = `page-${index}`;

			this.id = id;

			// page.dataset.pageNumber = index;

			page.dataset.pageNumber = index;
			page.setAttribute('id', id);

			if (this.name) {
				page.classList.add("pagedjs_" + this.name + "_page");
			}

			if (this.blank) {
				page.classList.add("pagedjs_blank_page");
			}

			if (pgnum === 0) {
				page.classList.add("pagedjs_first_page");
			}

			if (pgnum % 2 !== 1) {
				page.classList.remove("pagedjs_left_page");
				page.classList.add("pagedjs_right_page");
			} else {
				page.classList.remove("pagedjs_right_page");
				page.classList.add("pagedjs_left_page");
			}
		}

		/*
		size(width, height) {
			if (width === this.width && height === this.height) {
				return;
			}
			this.width = width;
			this.height = height;

			this.element.style.width = Math.round(width) + "px";
			this.element.style.height = Math.round(height) + "px";
			this.element.style.columnWidth = Math.round(width) + "px";
		}
		*/

		async layout(contents, breakToken, maxChars) {

			this.clear();

			this.startToken = breakToken;

			this.layoutMethod = new Layout(this.area, this.hooks, maxChars);

			let newBreakToken = await this.layoutMethod.renderTo(this.wrapper, contents, breakToken);

			this.addListeners(contents);

			this.endToken = newBreakToken;

			return newBreakToken;
		}

		async append(contents, breakToken) {

			if (!this.layoutMethod) {
				return this.layout(contents, breakToken);
			}

			let newBreakToken = await this.layoutMethod.renderTo(this.wrapper, contents, breakToken);

			this.endToken = newBreakToken;

			return newBreakToken;
		}

		getByParent(ref, entries) {
			let e;
			for (var i = 0; i < entries.length; i++) {
				e = entries[i];
				if(e.dataset.ref === ref) {
					return e;
				}
			}
		}

		onOverflow(func) {
			this._onOverflow = func;
		}

		onUnderflow(func) {
			this._onUnderflow = func;
		}

		clear() {
			this.removeListeners();
			this.wrapper && this.wrapper.remove();
			this.createWrapper();
		}

		addListeners(contents) {
			if (typeof ResizeObserver !== "undefined") {
				this.addResizeObserver(contents);
			} else {
				this._checkOverflowAfterResize = this.checkOverflowAfterResize.bind(this, contents);
				this.element.addEventListener("overflow", this._checkOverflowAfterResize, false);
				this.element.addEventListener("underflow", this._checkOverflowAfterResize, false);
			}
			// TODO: fall back to mutation observer?

			this._onScroll = function() {
				if(this.listening) {
					this.element.scrollLeft = 0;
				}
			}.bind(this);

			// Keep scroll left from changing
			this.element.addEventListener("scroll", this._onScroll);

			this.listening = true;

			return true;
		}

		removeListeners() {
			this.listening = false;

			if (typeof ResizeObserver !== "undefined" && this.ro) {
				this.ro.disconnect();
			} else if (this.element) {
				this.element.removeEventListener("overflow", this._checkOverflowAfterResize, false);
				this.element.removeEventListener("underflow", this._checkOverflowAfterResize, false);
			}

			this.element &&this.element.removeEventListener("scroll", this._onScroll);

		}

		addResizeObserver(contents) {
			let wrapper = this.wrapper;
			let prevHeight = wrapper.getBoundingClientRect().height;
			this.ro = new ResizeObserver( entries => {

				if (!this.listening) {
					return;
				}

				for (let entry of entries) {
					const cr = entry.contentRect;

					if (cr.height > prevHeight) {
						this.checkOverflowAfterResize(contents);
						prevHeight = wrapper.getBoundingClientRect().height;
					} else if (cr.height < prevHeight ) { // TODO: calc line height && (prevHeight - cr.height) >= 22
						this.checkUnderflowAfterResize(contents);
						prevHeight = cr.height;
					}
				}
			});

			this.ro.observe(wrapper);
		}

		checkOverflowAfterResize(contents) {
			if (!this.listening || !this.layoutMethod) {
				return;
			}

			let newBreakToken = this.layoutMethod.findBreakToken(this.wrapper, contents);

			if (newBreakToken) {
				this.endToken = newBreakToken;
				this._onOverflow && this._onOverflow(newBreakToken);
			}
		}

		checkUnderflowAfterResize(contents) {
			if (!this.listening || !this.layoutMethod) {
				return;
			}

			let endToken = this.layoutMethod.findEndToken(this.wrapper, contents);

			// let newBreakToken = this.layoutMethod.findBreakToken(this.wrapper, contents);

			if (endToken) {
				this._onUnderflow && this._onUnderflow(endToken);
			}
		}


		destroy() {
			this.removeListeners();

			this.element.remove();

			this.element = undefined;
			this.wrapper = undefined;
		}
	}

	eventEmitter(Page.prototype);

	/**
	 * Render a flow of text offscreen
	 * @class
	 */
	class ContentParser {

		constructor(content, cb) {
			if (content && content.nodeType) {
				// handle dom
				this.dom = this.add(content);
			} else if (typeof content === "string") {
				this.dom = this.parse(content);
			}

			return this.dom;
		}

		parse(markup, mime) {
			let range = document.createRange();
			let fragment = range.createContextualFragment(markup);

			this.addRefs(fragment);
			this.removeEmpty(fragment);

			return fragment;
		}

		add(contents) {
			// let fragment = document.createDocumentFragment();
			//
			// let children = [...contents.childNodes];
			// for (let child of children) {
			// 	let clone = child.cloneNode(true);
			// 	fragment.appendChild(clone);
			// }

			this.addRefs(contents);
			this.removeEmpty(contents);

			return contents;
		}

		addRefs(content) {
			var treeWalker = document.createTreeWalker(
				content,
				NodeFilter.SHOW_ELEMENT,
				{ acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
				false
			);

			let node = treeWalker.nextNode();
			while(node) {

				if (!node.hasAttribute("data-ref")) {
					let uuid = UUID();
					node.setAttribute("data-ref", uuid);
				}

				if (node.id) {
					node.setAttribute("data-id", node.id);
				}

				// node.setAttribute("data-children", node.childNodes.length);

				// node.setAttribute("data-text", node.textContent.trim().length);
				node = treeWalker.nextNode();
			}
		}

		removeEmpty(content) {
			var treeWalker = document.createTreeWalker(
				content,
				NodeFilter.SHOW_TEXT,
				{ acceptNode: function(node) {
					// Only remove more than a single space
					if (node.textContent.length > 1 && !node.textContent.trim()) {

						// Don't touch whitespace if text is preformated
						let parent = node.parentNode;
						let pre = isElement(parent) && parent.closest("pre");
						if (pre) {
							return NodeFilter.FILTER_REJECT;
						}

						return NodeFilter.FILTER_ACCEPT;
					} else {
						return NodeFilter.FILTER_REJECT;
					}
				} },
				false
			);

			let node;
			let current;
			node = treeWalker.nextNode();
			while(node) {
				current = node;
				node = treeWalker.nextNode();
				// if (!current.nextSibling || (current.nextSibling && current.nextSibling.nodeType === 1)) {
				current.parentNode.removeChild(current);
				// }
			}
		}

		find(ref) {
			return this.refs[ref];
		}

		// isWrapper(element) {
		//   return wrappersRegex.test(element.nodeName);
		// }

		isText(node) {
			return node.tagName === "TAG";
		}

		isElement(node) {
			return node.nodeType === 1;
		}

		hasChildren(node) {
			return node.childNodes && node.childNodes.length;
		}


		destroy() {
			this.refs = undefined;
			this.dom = undefined;
		}
	}

	/**
	 * Queue for handling tasks one at a time
	 * @class
	 * @param {scope} context what this will resolve to in the tasks
	 */
	class Queue {
		constructor(context){
			this._q = [];
			this.context = context;
			this.tick = requestAnimationFrame;
			this.running = false;
			this.paused = false;
		}

		/**
		 * Add an item to the queue
		 * @return {Promise} enqueued
		 */
		enqueue() {
			var deferred, promise;
			var queued;
			var task = [].shift.call(arguments);
			var args = arguments;

			// Handle single args without context
			// if(args && !Array.isArray(args)) {
			//   args = [args];
			// }
			if(!task) {
				throw new Error("No Task Provided");
			}

			if(typeof task === "function"){

				deferred = new defer();
				promise = deferred.promise;

				queued = {
					"task" : task,
					"args"     : args,
					//"context"  : context,
					"deferred" : deferred,
					"promise" : promise
				};

			} else {
				// Task is a promise
				queued = {
					"promise" : task
				};

			}

			this._q.push(queued);

			// Wait to start queue flush
			if (this.paused == false && !this.running) {
				this.run();
			}

			return queued.promise;
		}

		/**
		 * Run one item
		 * @return {Promise} dequeued
		 */
		dequeue(){
			var inwait, task, result;

			if(this._q.length && !this.paused) {
				inwait = this._q.shift();
				task = inwait.task;
				if(task){
					// console.log(task)

					result = task.apply(this.context, inwait.args);

					if(result && typeof result["then"] === "function") {
						// Task is a function that returns a promise
						return result.then(function(){
							inwait.deferred.resolve.apply(this.context, arguments);
						}.bind(this), function() {
							inwait.deferred.reject.apply(this.context, arguments);
						}.bind(this));
					} else {
						// Task resolves immediately
						inwait.deferred.resolve.apply(this.context, result);
						return inwait.promise;
					}



				} else if(inwait.promise) {
					// Task is a promise
					return inwait.promise;
				}

			} else {
				inwait = new defer();
				inwait.deferred.resolve();
				return inwait.promise;
			}

		}

		// Run All Immediately
		dump(){
			while(this._q.length) {
				this.dequeue();
			}
		}

		/**
		 * Run all tasks sequentially, at convince
		 * @return {Promise} all run
		 */
		run(){

			if(!this.running){
				this.running = true;
				this.defered = new defer();
			}

			this.tick.call(window, () => {

				if(this._q.length) {

					this.dequeue()
						.then(function(){
							this.run();
						}.bind(this));

				} else {
					this.defered.resolve();
					this.running = undefined;
				}

			});

			// Unpause
			if(this.paused == true) {
				this.paused = false;
			}

			return this.defered.promise;
		}

		/**
		 * Flush all, as quickly as possible
		 * @return {Promise} ran
		 */
		flush(){

			if(this.running){
				return this.running;
			}

			if(this._q.length) {
				this.running = this.dequeue()
					.then(function(){
						this.running = undefined;
						return this.flush();
					}.bind(this));

				return this.running;
			}

		}

		/**
		 * Clear all items in wait
		 * @return {void}
		 */
		clear(){
			this._q = [];
		}

		/**
		 * Get the number of tasks in the queue
		 * @return {number} tasks
		 */
		length(){
			return this._q.length;
		}

		/**
		 * Pause a running queue
		 * @return {void}
		 */
		pause(){
			this.paused = true;
		}

		/**
		 * End the queue
		 * @return {void}
		 */
		stop(){
			this._q = [];
			this.running = false;
			this.paused = true;
		}
	}

	const TEMPLATE = `
<div class="pagedjs_page">
	<div class="pagedjs_sheet">
		<div class="pagedjs_bleed pagedjs_bleed-top">
			<div class="pagedjs_marks-crop"></div>
			<div class="pagedjs_marks-middle">
				<div class="pagedjs_marks-cross"></div>
			</div>
			<div class="pagedjs_marks-crop"></div>
		</div>
		<div class="pagedjs_bleed pagedjs_bleed-bottom">
			<div class="pagedjs_marks-crop"></div>
			<div class="pagedjs_marks-middle">
				<div class="pagedjs_marks-cross"></div>
			</div>		<div class="pagedjs_marks-crop"></div>
		</div>
		<div class="pagedjs_bleed pagedjs_bleed-left">
			<div class="pagedjs_marks-crop"></div>
			<div class="pagedjs_marks-middle">
				<div class="pagedjs_marks-cross"></div>
			</div>		<div class="pagedjs_marks-crop"></div>
		</div>
		<div class="pagedjs_bleed pagedjs_bleed-right">
			<div class="pagedjs_marks-crop"></div>
			<div class="pagedjs_marks-middle">
				<div class="pagedjs_marks-cross"></div>
			</div>
			<div class="pagedjs_marks-crop"></div>
		</div>
		<div class="pagedjs_pagebox">
			<div class="pagedjs_margin-top-left-corner-holder">
				<div class="pagedjs_margin pagedjs_margin-top-left-corner"><div class="pagedjs_margin-content"></div></div>
			</div>
			<div class="pagedjs_margin-top">
				<div class="pagedjs_margin pagedjs_margin-top-left"><div class="pagedjs_margin-content"></div></div>
				<div class="pagedjs_margin pagedjs_margin-top-center"><div class="pagedjs_margin-content"></div></div>
				<div class="pagedjs_margin pagedjs_margin-top-right"><div class="pagedjs_margin-content"></div></div>
			</div>
			<div class="pagedjs_margin-top-right-corner-holder">
				<div class="pagedjs_margin pagedjs_margin-top-right-corner"><div class="pagedjs_margin-content"></div></div>
			</div>
			<div class="pagedjs_margin-right">
				<div class="pagedjs_margin pagedjs_margin-right-top"><div class="pagedjs_margin-content"></div></div>
				<div class="pagedjs_margin pagedjs_margin-right-middle"><div class="pagedjs_margin-content"></div></div>
				<div class="pagedjs_margin pagedjs_margin-right-bottom"><div class="pagedjs_margin-content"></div></div>
			</div>
			<div class="pagedjs_margin-left">
				<div class="pagedjs_margin pagedjs_margin-left-top"><div class="pagedjs_margin-content"></div></div>
				<div class="pagedjs_margin pagedjs_margin-left-middle"><div class="pagedjs_margin-content"></div></div>
				<div class="pagedjs_margin pagedjs_margin-left-bottom"><div class="pagedjs_margin-content"></div></div>
			</div>
			<div class="pagedjs_margin-bottom-left-corner-holder">
				<div class="pagedjs_margin pagedjs_margin-bottom-left-corner"><div class="pagedjs_margin-content"></div></div>
			</div>
			<div class="pagedjs_margin-bottom">
				<div class="pagedjs_margin pagedjs_margin-bottom-left"><div class="pagedjs_margin-content"></div></div>
				<div class="pagedjs_margin pagedjs_margin-bottom-center"><div class="pagedjs_margin-content"></div></div>
				<div class="pagedjs_margin pagedjs_margin-bottom-right"><div class="pagedjs_margin-content"></div></div>
			</div>
			<div class="pagedjs_margin-bottom-right-corner-holder">
				<div class="pagedjs_margin pagedjs_margin-bottom-right-corner"><div class="pagedjs_margin-content"></div></div>
			</div>
			<div class="pagedjs_area">
				<div class="pagedjs_page_content"></div>
			</div>
		</div>
	</div>
</div>`;

	/**
	 * Chop up text into flows
	 * @class
	 */
	class Chunker {
		constructor(content, renderTo) {
			// this.preview = preview;

			this.hooks = {};
			this.hooks.beforeParsed = new Hook(this);
			this.hooks.afterParsed = new Hook(this);
			this.hooks.beforePageLayout = new Hook(this);
			this.hooks.layout = new Hook(this);
			this.hooks.renderNode = new Hook(this);
			this.hooks.layoutNode = new Hook(this);
			this.hooks.onOverflow = new Hook(this);
			this.hooks.onBreakToken = new Hook();
			this.hooks.afterPageLayout = new Hook(this);
			this.hooks.afterRendered = new Hook(this);

			this.pages = [];
			this._total = 0;

			this.q = new Queue(this);
			this.stopped = false;
			this.rendered = false;

			this.content = content;

			this.charsPerBreak = [];
			this.maxChars;

			if (content) {
				this.flow(content, renderTo);
			}
		}

		setup(renderTo) {
			this.pagesArea = document.createElement("div");
			this.pagesArea.classList.add("pagedjs_pages");

			if (renderTo) {
				renderTo.appendChild(this.pagesArea);
			} else {
				document.querySelector("body").appendChild(this.pagesArea);
			}

			this.pageTemplate = document.createElement("template");
			this.pageTemplate.innerHTML = TEMPLATE;

		}

		async flow(content, renderTo) {
			let parsed;

			await this.hooks.beforeParsed.trigger(content, this);

			parsed = new ContentParser(content);

			this.source = parsed;
			this.breakToken = undefined;

			if (this.pagesArea && this.pageTemplate) {
				this.q.clear();
				this.removePages();
			} else {
				this.setup(renderTo);
			}

			this.emit("rendering", content);

			await this.hooks.afterParsed.trigger(parsed, this);

			await this.loadFonts();

			let rendered = await this.render(parsed, this.breakToken);
			while (rendered.canceled) {
				this.start();
				rendered = await this.render(parsed, this.breakToken);
			}

			this.rendered = true;

			await this.hooks.afterRendered.trigger(this.pages, this);

			this.emit("rendered", this.pages);

			return this;
		}

		// oversetPages() {
		// 	let overset = [];
		// 	for (let i = 0; i < this.pages.length; i++) {
		// 		let page = this.pages[i];
		// 		if (page.overset) {
		// 			overset.push(page);
		// 			// page.overset = false;
		// 		}
		// 	}
		// 	return overset;
		// }
		//
		// async handleOverset(parsed) {
		// 	let overset = this.oversetPages();
		// 	if (overset.length) {
		// 		console.log("overset", overset);
		// 		let index = this.pages.indexOf(overset[0]) + 1;
		// 		console.log("INDEX", index);
		//
		// 		// Remove pages
		// 		// this.removePages(index);
		//
		// 		// await this.render(parsed, overset[0].overset);
		//
		// 		// return this.handleOverset(parsed);
		// 	}
		// }

		async render(parsed, startAt) {
			let renderer = this.layout(parsed, startAt);

			let done = false;
			let result;

			while (!done) {
				result = await this.q.enqueue(() => { return this.renderAsync(renderer); });
				done = result.done;
			}

			return result;
		}

		start() {
			this.rendered = false;
			this.stopped = false;
		}

		stop() {
			this.stopped = true;
			// this.q.clear();
		}

		renderOnIdle(renderer) {
			return new Promise(resolve => {
				requestIdleCallback(async () => {
					if (this.stopped) {
						return resolve({ done: true, canceled: true });
					}
					let result = await renderer.next();
					if (this.stopped) {
						resolve({ done: true, canceled: true });
					} else {
						resolve(result);
					}
				});
			});
		}

		async renderAsync(renderer) {
			if (this.stopped) {
				return { done: true, canceled: true };
			}
			let result = await renderer.next();
			if (this.stopped) {
				return { done: true, canceled: true };
			} else {
				return result;
			}
		}

		async handleBreaks(node) {
			let currentPage = this.total + 1;
			let currentPosition = currentPage % 2 === 0 ? "left" : "right";
			// TODO: Recto and Verso should reverse for rtl languages
			let currentSide = currentPage % 2 === 0 ? "verso" : "recto";
			let previousBreakAfter;
			let breakBefore;
			let page;

			if (currentPage === 1) {
				return;
			}

			if (node &&
					typeof node.dataset !== "undefined" &&
					typeof node.dataset.previousBreakAfter !== "undefined") {
				previousBreakAfter = node.dataset.previousBreakAfter;
			}

			if (node &&
					typeof node.dataset !== "undefined" &&
					typeof node.dataset.breakBefore !== "undefined") {
				breakBefore = node.dataset.breakBefore;
			}

			if( previousBreakAfter &&
					(previousBreakAfter === "left" || previousBreakAfter === "right") &&
					previousBreakAfter !== currentPosition) {
				page = this.addPage(true);
			} else if( previousBreakAfter &&
					(previousBreakAfter === "verso" || previousBreakAfter === "recto") &&
					previousBreakAfter !== currentSide) {
				page = this.addPage(true);
			} else if( breakBefore &&
					(breakBefore === "left" || breakBefore === "right") &&
					breakBefore !== currentPosition) {
				page = this.addPage(true);
			} else if( breakBefore &&
					(breakBefore === "verso" || breakBefore === "recto") &&
					breakBefore !== currentSide) {
				page = this.addPage(true);
			}

			if (page) {
				await this.hooks.beforePageLayout.trigger(page, undefined, undefined, this);
				this.emit("page", page);
				// await this.hooks.layout.trigger(page.element, page, undefined, this);
				await this.hooks.afterPageLayout.trigger(page.element, page, undefined, this);
				this.emit("renderedPage", page);
			}
		}

		async *layout(content, startAt) {
			let breakToken = startAt || false;

			while (breakToken !== undefined && (true)) {

				if (breakToken && breakToken.node) {
					await this.handleBreaks(breakToken.node);
				} else {
					await this.handleBreaks(content.firstChild);
				}

				let page = this.addPage();

				await this.hooks.beforePageLayout.trigger(page, content, breakToken, this);
				this.emit("page", page);

				// Layout content in the page, starting from the breakToken
				breakToken = await page.layout(content, breakToken, this.maxChars);

				await this.hooks.afterPageLayout.trigger(page.element, page, breakToken, this);
				this.emit("renderedPage", page);

				this.recoredCharLength(page.wrapper.textContent.length);

				yield breakToken;

				// Stop if we get undefined, showing we have reached the end of the content
			}
		}

		recoredCharLength(length) {
			if (length === 0) {
				return;
			}

			this.charsPerBreak.push(length);

			// Keep the length of the last few breaks
			if (this.charsPerBreak.length > 4) {
				this.charsPerBreak.shift();
			}

			this.maxChars = this.charsPerBreak.reduce((a, b) => a + b, 0) / (this.charsPerBreak.length);
		}

		removePages(fromIndex=0) {

			if (fromIndex >= this.pages.length) {
				return;
			}

			// Remove pages
			for (let i = fromIndex; i < this.pages.length; i++) {
				this.pages[i].destroy();
			}

			if (fromIndex > 0) {
				this.pages.splice(fromIndex);
			} else {
				this.pages = [];
			}
		}

		addPage(blank) {
			let lastPage = this.pages[this.pages.length - 1];
			// Create a new page from the template
			let page = new Page(this.pagesArea, this.pageTemplate, blank, this.hooks);

			this.pages.push(page);

			// Create the pages
			page.create(undefined, lastPage && lastPage.element);

			page.index(this.total);

			if (!blank) {
				// Listen for page overflow
				page.onOverflow((overflowToken) => {
					console.warn("overflow on", page.id, overflowToken);

					// Only reflow while rendering
					if (this.rendered) {
						return;
					}

					let index = this.pages.indexOf(page) + 1;

					// Stop the rendering
					this.stop();

					// Set the breakToken to resume at
					this.breakToken = overflowToken;

					// Remove pages
					this.removePages(index);

					if (this.rendered === true) {
						this.rendered = false;

						this.q.enqueue(async () => {

							this.start();

							await this.render(this.source, this.breakToken);

							this.rendered = true;

						});
					}


				});

				page.onUnderflow((overflowToken) => {
					// console.log("underflow on", page.id, overflowToken);

					// page.append(this.source, overflowToken);

				});
			}

			this.total = this.pages.length;

			return page;
		}
		/*
		insertPage(index, blank) {
			let lastPage = this.pages[index];
			// Create a new page from the template
			let page = new Page(this.pagesArea, this.pageTemplate, blank, this.hooks);

			let total = this.pages.splice(index, 0, page);

			// Create the pages
			page.create(undefined, lastPage && lastPage.element);

			page.index(index + 1);

			for (let i = index + 2; i < this.pages.length; i++) {
				this.pages[i].index(i);
			}

			if (!blank) {
				// Listen for page overflow
				page.onOverflow((overflowToken) => {
					if (total < this.pages.length) {
						this.pages[total].layout(this.source, overflowToken);
					} else {
						let newPage = this.addPage();
						newPage.layout(this.source, overflowToken);
					}
				});

				page.onUnderflow(() => {
					// console.log("underflow on", page.id);
				});
			}

			this.total += 1;

			return page;
		}
		*/

		get total() {
			return this._total;
		}

		set total(num) {
			this.pagesArea.style.setProperty("--pagedjs-page-count", num);
			this._total = num;
		}

		loadFonts() {
			let fontPromises = [];
			document.fonts.forEach((fontFace) => {
				if (fontFace.status !== "loaded") {
					let fontLoaded = fontFace.load().then((r) => {
						return fontFace.family;
					}, (r) => {
						console.warn("Failed to preload font-family:", fontFace.family);
						return fontFace.family;
					});
					fontPromises.push(fontLoaded);
				}
			});
			return Promise.all(fontPromises).catch((err) => {
				console.warn(err);
			});
		}

		destroy() {
			this.pagesArea.remove();
			this.pageTemplate.remove();
		}

	}

	eventEmitter(Chunker.prototype);

	//
	//            item        item        item        item
	//          /------\    /------\    /------\    /------\
	//          | data |    | data |    | data |    | data |
	//  null <--+-prev |<---+-prev |<---+-prev |<---+-prev |
	//          | next-+--->| next-+--->| next-+--->| next-+--> null
	//          \------/    \------/    \------/    \------/
	//             ^                                    ^
	//             |                list                |
	//             |              /------\              |
	//             \--------------+-head |              |
	//                            | tail-+--------------/
	//                            \------/
	//

	function createItem(data) {
	    return {
	        prev: null,
	        next: null,
	        data: data
	    };
	}

	function allocateCursor(node, prev, next) {
	    var cursor;

	    if (cursors !== null) {
	        cursor = cursors;
	        cursors = cursors.cursor;
	        cursor.prev = prev;
	        cursor.next = next;
	        cursor.cursor = node.cursor;
	    } else {
	        cursor = {
	            prev: prev,
	            next: next,
	            cursor: node.cursor
	        };
	    }

	    node.cursor = cursor;

	    return cursor;
	}

	function releaseCursor(node) {
	    var cursor = node.cursor;

	    node.cursor = cursor.cursor;
	    cursor.prev = null;
	    cursor.next = null;
	    cursor.cursor = cursors;
	    cursors = cursor;
	}

	var cursors = null;
	var List = function() {
	    this.cursor = null;
	    this.head = null;
	    this.tail = null;
	};

	List.createItem = createItem;
	List.prototype.createItem = createItem;

	List.prototype.updateCursors = function(prevOld, prevNew, nextOld, nextNew) {
	    var cursor = this.cursor;

	    while (cursor !== null) {
	        if (cursor.prev === prevOld) {
	            cursor.prev = prevNew;
	        }

	        if (cursor.next === nextOld) {
	            cursor.next = nextNew;
	        }

	        cursor = cursor.cursor;
	    }
	};

	List.prototype.getSize = function() {
	    var size = 0;
	    var cursor = this.head;

	    while (cursor) {
	        size++;
	        cursor = cursor.next;
	    }

	    return size;
	};

	List.prototype.fromArray = function(array) {
	    var cursor = null;

	    this.head = null;

	    for (var i = 0; i < array.length; i++) {
	        var item = createItem(array[i]);

	        if (cursor !== null) {
	            cursor.next = item;
	        } else {
	            this.head = item;
	        }

	        item.prev = cursor;
	        cursor = item;
	    }

	    this.tail = cursor;

	    return this;
	};

	List.prototype.toArray = function() {
	    var cursor = this.head;
	    var result = [];

	    while (cursor) {
	        result.push(cursor.data);
	        cursor = cursor.next;
	    }

	    return result;
	};

	List.prototype.toJSON = List.prototype.toArray;

	List.prototype.isEmpty = function() {
	    return this.head === null;
	};

	List.prototype.first = function() {
	    return this.head && this.head.data;
	};

	List.prototype.last = function() {
	    return this.tail && this.tail.data;
	};

	List.prototype.each = function(fn, context) {
	    var item;

	    if (context === undefined) {
	        context = this;
	    }

	    // push cursor
	    var cursor = allocateCursor(this, null, this.head);

	    while (cursor.next !== null) {
	        item = cursor.next;
	        cursor.next = item.next;

	        fn.call(context, item.data, item, this);
	    }

	    // pop cursor
	    releaseCursor(this);
	};

	List.prototype.forEach = List.prototype.each;

	List.prototype.eachRight = function(fn, context) {
	    var item;

	    if (context === undefined) {
	        context = this;
	    }

	    // push cursor
	    var cursor = allocateCursor(this, this.tail, null);

	    while (cursor.prev !== null) {
	        item = cursor.prev;
	        cursor.prev = item.prev;

	        fn.call(context, item.data, item, this);
	    }

	    // pop cursor
	    releaseCursor(this);
	};

	List.prototype.forEachRight = List.prototype.eachRight;

	List.prototype.nextUntil = function(start, fn, context) {
	    if (start === null) {
	        return;
	    }

	    var item;

	    if (context === undefined) {
	        context = this;
	    }

	    // push cursor
	    var cursor = allocateCursor(this, null, start);

	    while (cursor.next !== null) {
	        item = cursor.next;
	        cursor.next = item.next;

	        if (fn.call(context, item.data, item, this)) {
	            break;
	        }
	    }

	    // pop cursor
	    releaseCursor(this);
	};

	List.prototype.prevUntil = function(start, fn, context) {
	    if (start === null) {
	        return;
	    }

	    var item;

	    if (context === undefined) {
	        context = this;
	    }

	    // push cursor
	    var cursor = allocateCursor(this, start, null);

	    while (cursor.prev !== null) {
	        item = cursor.prev;
	        cursor.prev = item.prev;

	        if (fn.call(context, item.data, item, this)) {
	            break;
	        }
	    }

	    // pop cursor
	    releaseCursor(this);
	};

	List.prototype.some = function(fn, context) {
	    var cursor = this.head;

	    if (context === undefined) {
	        context = this;
	    }

	    while (cursor !== null) {
	        if (fn.call(context, cursor.data, cursor, this)) {
	            return true;
	        }

	        cursor = cursor.next;
	    }

	    return false;
	};

	List.prototype.map = function(fn, context) {
	    var result = new List();
	    var cursor = this.head;

	    if (context === undefined) {
	        context = this;
	    }

	    while (cursor !== null) {
	        result.appendData(fn.call(context, cursor.data, cursor, this));
	        cursor = cursor.next;
	    }

	    return result;
	};

	List.prototype.filter = function(fn, context) {
	    var result = new List();
	    var cursor = this.head;

	    if (context === undefined) {
	        context = this;
	    }

	    while (cursor !== null) {
	        if (fn.call(context, cursor.data, cursor, this)) {
	            result.appendData(cursor.data);
	        }
	        cursor = cursor.next;
	    }

	    return result;
	};

	List.prototype.clear = function() {
	    this.head = null;
	    this.tail = null;
	};

	List.prototype.copy = function() {
	    var result = new List();
	    var cursor = this.head;

	    while (cursor !== null) {
	        result.insert(createItem(cursor.data));
	        cursor = cursor.next;
	    }

	    return result;
	};

	List.prototype.prepend = function(item) {
	    //      head
	    //    ^
	    // item
	    this.updateCursors(null, item, this.head, item);

	    // insert to the beginning of the list
	    if (this.head !== null) {
	        // new item <- first item
	        this.head.prev = item;

	        // new item -> first item
	        item.next = this.head;
	    } else {
	        // if list has no head, then it also has no tail
	        // in this case tail points to the new item
	        this.tail = item;
	    }

	    // head always points to new item
	    this.head = item;

	    return this;
	};

	List.prototype.prependData = function(data) {
	    return this.prepend(createItem(data));
	};

	List.prototype.append = function(item) {
	    return this.insert(item);
	};

	List.prototype.appendData = function(data) {
	    return this.insert(createItem(data));
	};

	List.prototype.insert = function(item, before) {
	    if (before !== undefined && before !== null) {
	        // prev   before
	        //      ^
	        //     item
	        this.updateCursors(before.prev, item, before, item);

	        if (before.prev === null) {
	            // insert to the beginning of list
	            if (this.head !== before) {
	                throw new Error('before doesn\'t belong to list');
	            }

	            // since head points to before therefore list doesn't empty
	            // no need to check tail
	            this.head = item;
	            before.prev = item;
	            item.next = before;

	            this.updateCursors(null, item);
	        } else {

	            // insert between two items
	            before.prev.next = item;
	            item.prev = before.prev;

	            before.prev = item;
	            item.next = before;
	        }
	    } else {
	        // tail
	        //      ^
	        //      item
	        this.updateCursors(this.tail, item, null, item);

	        // insert to the ending of the list
	        if (this.tail !== null) {
	            // last item -> new item
	            this.tail.next = item;

	            // last item <- new item
	            item.prev = this.tail;
	        } else {
	            // if list has no tail, then it also has no head
	            // in this case head points to new item
	            this.head = item;
	        }

	        // tail always points to new item
	        this.tail = item;
	    }

	    return this;
	};

	List.prototype.insertData = function(data, before) {
	    return this.insert(createItem(data), before);
	};

	List.prototype.remove = function(item) {
	    //      item
	    //       ^
	    // prev     next
	    this.updateCursors(item, item.prev, item, item.next);

	    if (item.prev !== null) {
	        item.prev.next = item.next;
	    } else {
	        if (this.head !== item) {
	            throw new Error('item doesn\'t belong to list');
	        }

	        this.head = item.next;
	    }

	    if (item.next !== null) {
	        item.next.prev = item.prev;
	    } else {
	        if (this.tail !== item) {
	            throw new Error('item doesn\'t belong to list');
	        }

	        this.tail = item.prev;
	    }

	    item.prev = null;
	    item.next = null;

	    return item;
	};

	List.prototype.push = function(data) {
	    this.insert(createItem(data));
	};

	List.prototype.pop = function() {
	    if (this.tail !== null) {
	        return this.remove(this.tail);
	    }
	};

	List.prototype.unshift = function(data) {
	    this.prepend(createItem(data));
	};

	List.prototype.shift = function() {
	    if (this.head !== null) {
	        return this.remove(this.head);
	    }
	};

	List.prototype.prependList = function(list) {
	    return this.insertList(list, this.head);
	};

	List.prototype.appendList = function(list) {
	    return this.insertList(list);
	};

	List.prototype.insertList = function(list, before) {
	    // ignore empty lists
	    if (list.head === null) {
	        return this;
	    }

	    if (before !== undefined && before !== null) {
	        this.updateCursors(before.prev, list.tail, before, list.head);

	        // insert in the middle of dist list
	        if (before.prev !== null) {
	            // before.prev <-> list.head
	            before.prev.next = list.head;
	            list.head.prev = before.prev;
	        } else {
	            this.head = list.head;
	        }

	        before.prev = list.tail;
	        list.tail.next = before;
	    } else {
	        this.updateCursors(this.tail, list.tail, null, list.head);

	        // insert to end of the list
	        if (this.tail !== null) {
	            // if destination list has a tail, then it also has a head,
	            // but head doesn't change

	            // dest tail -> source head
	            this.tail.next = list.head;

	            // dest tail <- source head
	            list.head.prev = this.tail;
	        } else {
	            // if list has no a tail, then it also has no a head
	            // in this case points head to new item
	            this.head = list.head;
	        }

	        // tail always start point to new item
	        this.tail = list.tail;
	    }

	    list.head = null;
	    list.tail = null;

	    return this;
	};

	List.prototype.replace = function(oldItem, newItemOrList) {
	    if ('head' in newItemOrList) {
	        this.insertList(newItemOrList, oldItem);
	    } else {
	        this.insert(newItemOrList, oldItem);
	    }

	    this.remove(oldItem);
	};

	var list = List;

	var createCustomError = function createCustomError(name, message) {
	    // use Object.create(), because some VMs prevent setting line/column otherwise
	    // (iOS Safari 10 even throws an exception)
	    var error = Object.create(SyntaxError.prototype);
	    var errorStack = new Error();

	    error.name = name;
	    error.message = message;

	    Object.defineProperty(error, 'stack', {
	        get: function() {
	            return (errorStack.stack || '').replace(/^(.+\n){1,3}/, name + ': ' + message + '\n');
	        }
	    });

	    return error;
	};

	var MAX_LINE_LENGTH = 100;
	var OFFSET_CORRECTION = 60;
	var TAB_REPLACEMENT = '    ';

	function sourceFragment(error, extraLines) {
	    function processLines(start, end) {
	        return lines.slice(start, end).map(function(line, idx) {
	            var num = String(start + idx + 1);

	            while (num.length < maxNumLength) {
	                num = ' ' + num;
	            }

	            return num + ' |' + line;
	        }).join('\n');
	    }

	    var lines = error.source.split(/\r\n?|\n|\f/);
	    var line = error.line;
	    var column = error.column;
	    var startLine = Math.max(1, line - extraLines) - 1;
	    var endLine = Math.min(line + extraLines, lines.length + 1);
	    var maxNumLength = Math.max(4, String(endLine).length) + 1;
	    var cutLeft = 0;

	    // column correction according to replaced tab before column
	    column += (TAB_REPLACEMENT.length - 1) * (lines[line - 1].substr(0, column - 1).match(/\t/g) || []).length;

	    if (column > MAX_LINE_LENGTH) {
	        cutLeft = column - OFFSET_CORRECTION + 3;
	        column = OFFSET_CORRECTION - 2;
	    }

	    for (var i = startLine; i <= endLine; i++) {
	        if (i >= 0 && i < lines.length) {
	            lines[i] = lines[i].replace(/\t/g, TAB_REPLACEMENT);
	            lines[i] =
	                (cutLeft > 0 && lines[i].length > cutLeft ? '\u2026' : '') +
	                lines[i].substr(cutLeft, MAX_LINE_LENGTH - 2) +
	                (lines[i].length > cutLeft + MAX_LINE_LENGTH - 1 ? '\u2026' : '');
	        }
	    }

	    return [
	        processLines(startLine, line),
	        new Array(column + maxNumLength + 2).join('-') + '^',
	        processLines(line, endLine)
	    ].filter(Boolean).join('\n');
	}

	var CssSyntaxError = function(message, source, offset, line, column) {
	    var error = createCustomError('CssSyntaxError', message);

	    error.source = source;
	    error.offset = offset;
	    error.line = line;
	    error.column = column;

	    error.sourceFragment = function(extraLines) {
	        return sourceFragment(error, isNaN(extraLines) ? 0 : extraLines);
	    };
	    Object.defineProperty(error, 'formattedMessage', {
	        get: function() {
	            return (
	                'Parse error: ' + error.message + '\n' +
	                sourceFragment(error, 2)
	            );
	        }
	    });

	    // for backward capability
	    error.parseError = {
	        offset: offset,
	        line: line,
	        column: column
	    };

	    return error;
	};

	var error = CssSyntaxError;

	// token types (note: value shouldn't intersect with used char codes)
	var WHITESPACE = 1;
	var IDENTIFIER = 2;
	var NUMBER = 3;
	var STRING = 4;
	var COMMENT = 5;
	var PUNCTUATOR = 6;
	var CDO = 7;
	var CDC = 8;
	var ATKEYWORD = 14;
	var FUNCTION = 15;
	var URL$1 = 16;
	var RAW = 17;

	var TAB = 9;
	var N = 10;
	var F = 12;
	var R = 13;
	var SPACE = 32;

	var TYPE = {
	    WhiteSpace:   WHITESPACE,
	    Identifier:   IDENTIFIER,
	    Number:           NUMBER,
	    String:           STRING,
	    Comment:         COMMENT,
	    Punctuator:   PUNCTUATOR,
	    CDO:                 CDO,
	    CDC:                 CDC,
	    AtKeyword:     ATKEYWORD,
	    Function:       FUNCTION,
	    Url:                 URL$1,
	    Raw:                 RAW,

	    ExclamationMark:      33,  // !
	    QuotationMark:        34,  // "
	    NumberSign:           35,  // #
	    DollarSign:           36,  // $
	    PercentSign:          37,  // %
	    Ampersand:            38,  // &
	    Apostrophe:           39,  // '
	    LeftParenthesis:      40,  // (
	    RightParenthesis:     41,  // )
	    Asterisk:             42,  // *
	    PlusSign:             43,  // +
	    Comma:                44,  // ,
	    HyphenMinus:          45,  // -
	    FullStop:             46,  // .
	    Solidus:              47,  // /
	    Colon:                58,  // :
	    Semicolon:            59,  // ;
	    LessThanSign:         60,  // <
	    EqualsSign:           61,  // =
	    GreaterThanSign:      62,  // >
	    QuestionMark:         63,  // ?
	    CommercialAt:         64,  // @
	    LeftSquareBracket:    91,  // [
	    Backslash:            92,  // \
	    RightSquareBracket:   93,  // ]
	    CircumflexAccent:     94,  // ^
	    LowLine:              95,  // _
	    GraveAccent:          96,  // `
	    LeftCurlyBracket:    123,  // {
	    VerticalLine:        124,  // |
	    RightCurlyBracket:   125,  // }
	    Tilde:               126   // ~
	};

	var NAME = Object.keys(TYPE).reduce(function(result, key) {
	    result[TYPE[key]] = key;
	    return result;
	}, {});

	// https://drafts.csswg.org/css-syntax/#tokenizer-definitions
	// > non-ASCII code point
	// >   A code point with a value equal to or greater than U+0080 <control>
	// > name-start code point
	// >   A letter, a non-ASCII code point, or U+005F LOW LINE (_).
	// > name code point
	// >   A name-start code point, a digit, or U+002D HYPHEN-MINUS (-)
	// That means only ASCII code points has a special meaning and we a maps for 0..127 codes only
	var SafeUint32Array = typeof Uint32Array !== 'undefined' ? Uint32Array : Array; // fallback on Array when TypedArray is not supported
	var SYMBOL_TYPE = new SafeUint32Array(0x80);
	var PUNCTUATION = new SafeUint32Array(0x80);
	var STOP_URL_RAW = new SafeUint32Array(0x80);

	for (var i = 0; i < SYMBOL_TYPE.length; i++) {
	    SYMBOL_TYPE[i] = IDENTIFIER;
	}

	// fill categories
	[
	    TYPE.ExclamationMark,    // !
	    TYPE.QuotationMark,      // "
	    TYPE.NumberSign,         // #
	    TYPE.DollarSign,         // $
	    TYPE.PercentSign,        // %
	    TYPE.Ampersand,          // &
	    TYPE.Apostrophe,         // '
	    TYPE.LeftParenthesis,    // (
	    TYPE.RightParenthesis,   // )
	    TYPE.Asterisk,           // *
	    TYPE.PlusSign,           // +
	    TYPE.Comma,              // ,
	    TYPE.HyphenMinus,        // -
	    TYPE.FullStop,           // .
	    TYPE.Solidus,            // /
	    TYPE.Colon,              // :
	    TYPE.Semicolon,          // ;
	    TYPE.LessThanSign,       // <
	    TYPE.EqualsSign,         // =
	    TYPE.GreaterThanSign,    // >
	    TYPE.QuestionMark,       // ?
	    TYPE.CommercialAt,       // @
	    TYPE.LeftSquareBracket,  // [
	    // TYPE.Backslash,          // \
	    TYPE.RightSquareBracket, // ]
	    TYPE.CircumflexAccent,   // ^
	    // TYPE.LowLine,            // _
	    TYPE.GraveAccent,        // `
	    TYPE.LeftCurlyBracket,   // {
	    TYPE.VerticalLine,       // |
	    TYPE.RightCurlyBracket,  // }
	    TYPE.Tilde               // ~
	].forEach(function(key) {
	    SYMBOL_TYPE[Number(key)] = PUNCTUATOR;
	    PUNCTUATION[Number(key)] = PUNCTUATOR;
	});

	for (var i = 48; i <= 57; i++) {
	    SYMBOL_TYPE[i] = NUMBER;
	}

	SYMBOL_TYPE[SPACE] = WHITESPACE;
	SYMBOL_TYPE[TAB] = WHITESPACE;
	SYMBOL_TYPE[N] = WHITESPACE;
	SYMBOL_TYPE[R] = WHITESPACE;
	SYMBOL_TYPE[F] = WHITESPACE;

	SYMBOL_TYPE[TYPE.Apostrophe] = STRING;
	SYMBOL_TYPE[TYPE.QuotationMark] = STRING;

	STOP_URL_RAW[SPACE] = 1;
	STOP_URL_RAW[TAB] = 1;
	STOP_URL_RAW[N] = 1;
	STOP_URL_RAW[R] = 1;
	STOP_URL_RAW[F] = 1;
	STOP_URL_RAW[TYPE.Apostrophe] = 1;
	STOP_URL_RAW[TYPE.QuotationMark] = 1;
	STOP_URL_RAW[TYPE.LeftParenthesis] = 1;
	STOP_URL_RAW[TYPE.RightParenthesis] = 1;

	// whitespace is punctuation ...
	PUNCTUATION[SPACE] = PUNCTUATOR;
	PUNCTUATION[TAB] = PUNCTUATOR;
	PUNCTUATION[N] = PUNCTUATOR;
	PUNCTUATION[R] = PUNCTUATOR;
	PUNCTUATION[F] = PUNCTUATOR;
	// ... hyper minus is not
	PUNCTUATION[TYPE.HyphenMinus] = 0;

	var _const = {
	    TYPE: TYPE,
	    NAME: NAME,

	    SYMBOL_TYPE: SYMBOL_TYPE,
	    PUNCTUATION: PUNCTUATION,
	    STOP_URL_RAW: STOP_URL_RAW
	};

	var PUNCTUATION$1 = _const.PUNCTUATION;
	var STOP_URL_RAW$1 = _const.STOP_URL_RAW;
	var TYPE$1 = _const.TYPE;
	var FULLSTOP = TYPE$1.FullStop;
	var PLUSSIGN = TYPE$1.PlusSign;
	var HYPHENMINUS = TYPE$1.HyphenMinus;
	var PUNCTUATOR$1 = TYPE$1.Punctuator;
	var TAB$1 = 9;
	var N$1 = 10;
	var F$1 = 12;
	var R$1 = 13;
	var SPACE$1 = 32;
	var BACK_SLASH = 92;
	var E = 101; // 'e'.charCodeAt(0)

	function firstCharOffset(source) {
	    // detect BOM (https://en.wikipedia.org/wiki/Byte_order_mark)
	    if (source.charCodeAt(0) === 0xFEFF ||  // UTF-16BE
	        source.charCodeAt(0) === 0xFFFE) {  // UTF-16LE
	        return 1;
	    }

	    return 0;
	}

	function isHex(code) {
	    return (code >= 48 && code <= 57) || // 0 .. 9
	           (code >= 65 && code <= 70) || // A .. F
	           (code >= 97 && code <= 102);  // a .. f
	}

	function isNumber(code) {
	    return code >= 48 && code <= 57;
	}

	function isWhiteSpace(code) {
	    return code === SPACE$1 || code === TAB$1 || isNewline(code);
	}

	function isNewline(code) {
	    return code === R$1 || code === N$1 || code === F$1;
	}

	function getNewlineLength(source, offset, code) {
	    if (isNewline(code)) {
	        if (code === R$1 && offset + 1 < source.length && source.charCodeAt(offset + 1) === N$1) {
	            return 2;
	        }

	        return 1;
	    }

	    return 0;
	}

	function cmpChar(testStr, offset, referenceCode) {
	    var code = testStr.charCodeAt(offset);

	    // code.toLowerCase() for A..Z
	    if (code >= 65 && code <= 90) {
	        code = code | 32;
	    }

	    return code === referenceCode;
	}

	function cmpStr(testStr, start, end, referenceStr) {
	    if (end - start !== referenceStr.length) {
	        return false;
	    }

	    if (start < 0 || end > testStr.length) {
	        return false;
	    }

	    for (var i = start; i < end; i++) {
	        var testCode = testStr.charCodeAt(i);
	        var refCode = referenceStr.charCodeAt(i - start);

	        // testCode.toLowerCase() for A..Z
	        if (testCode >= 65 && testCode <= 90) {
	            testCode = testCode | 32;
	        }

	        if (testCode !== refCode) {
	            return false;
	        }
	    }

	    return true;
	}

	function findWhiteSpaceStart(source, offset) {
	    while (offset >= 0 && isWhiteSpace(source.charCodeAt(offset))) {
	        offset--;
	    }

	    return offset + 1;
	}

	function findWhiteSpaceEnd(source, offset) {
	    while (offset < source.length && isWhiteSpace(source.charCodeAt(offset))) {
	        offset++;
	    }

	    return offset;
	}

	function findCommentEnd(source, offset) {
	    var commentEnd = source.indexOf('*/', offset);

	    if (commentEnd === -1) {
	        return source.length;
	    }

	    return commentEnd + 2;
	}

	function findStringEnd(source, offset, quote) {
	    for (; offset < source.length; offset++) {
	        var code = source.charCodeAt(offset);

	        // TODO: bad string
	        if (code === BACK_SLASH) {
	            offset++;
	        } else if (code === quote) {
	            offset++;
	            break;
	        }
	    }

	    return offset;
	}

	function findDecimalNumberEnd(source, offset) {
	    while (offset < source.length && isNumber(source.charCodeAt(offset))) {
	        offset++;
	    }

	    return offset;
	}

	function findNumberEnd(source, offset, allowFraction) {
	    var code;

	    offset = findDecimalNumberEnd(source, offset);

	    // fraction: .\d+
	    if (allowFraction && offset + 1 < source.length && source.charCodeAt(offset) === FULLSTOP) {
	        code = source.charCodeAt(offset + 1);

	        if (isNumber(code)) {
	            offset = findDecimalNumberEnd(source, offset + 1);
	        }
	    }

	    // exponent: e[+-]\d+
	    if (offset + 1 < source.length) {
	        if ((source.charCodeAt(offset) | 32) === E) { // case insensitive check for `e`
	            code = source.charCodeAt(offset + 1);

	            if (code === PLUSSIGN || code === HYPHENMINUS) {
	                if (offset + 2 < source.length) {
	                    code = source.charCodeAt(offset + 2);
	                }
	            }

	            if (isNumber(code)) {
	                offset = findDecimalNumberEnd(source, offset + 2);
	            }
	        }
	    }

	    return offset;
	}

	// skip escaped unicode sequence that can ends with space
	// [0-9a-f]{1,6}(\r\n|[ \n\r\t\f])?
	function findEscapeEnd(source, offset) {
	    for (var i = 0; i < 7 && offset + i < source.length; i++) {
	        var code = source.charCodeAt(offset + i);

	        if (i !== 6 && isHex(code)) {
	            continue;
	        }

	        if (i > 0) {
	            offset += i - 1 + getNewlineLength(source, offset + i, code);
	            if (code === SPACE$1 || code === TAB$1) {
	                offset++;
	            }
	        }

	        break;
	    }

	    return offset;
	}

	function findIdentifierEnd(source, offset) {
	    for (; offset < source.length; offset++) {
	        var code = source.charCodeAt(offset);

	        if (code === BACK_SLASH) {
	            offset = findEscapeEnd(source, offset + 1);
	        } else if (code < 0x80 && PUNCTUATION$1[code] === PUNCTUATOR$1) {
	            break;
	        }
	    }

	    return offset;
	}

	function findUrlRawEnd(source, offset) {
	    for (; offset < source.length; offset++) {
	        var code = source.charCodeAt(offset);

	        if (code === BACK_SLASH) {
	            offset = findEscapeEnd(source, offset + 1);
	        } else if (code < 0x80 && STOP_URL_RAW$1[code] === 1) {
	            break;
	        }
	    }

	    return offset;
	}

	var utils = {
	    firstCharOffset: firstCharOffset,

	    isHex: isHex,
	    isNumber: isNumber,
	    isWhiteSpace: isWhiteSpace,
	    isNewline: isNewline,
	    getNewlineLength: getNewlineLength,

	    cmpChar: cmpChar,
	    cmpStr: cmpStr,

	    findWhiteSpaceStart: findWhiteSpaceStart,
	    findWhiteSpaceEnd: findWhiteSpaceEnd,
	    findCommentEnd: findCommentEnd,
	    findStringEnd: findStringEnd,
	    findDecimalNumberEnd: findDecimalNumberEnd,
	    findNumberEnd: findNumberEnd,
	    findEscapeEnd: findEscapeEnd,
	    findIdentifierEnd: findIdentifierEnd,
	    findUrlRawEnd: findUrlRawEnd
	};

	var TYPE$2 = _const.TYPE;
	var NAME$1 = _const.NAME;
	var SYMBOL_TYPE$1 = _const.SYMBOL_TYPE;


	var firstCharOffset$1 = utils.firstCharOffset;
	var cmpStr$1 = utils.cmpStr;
	var isNumber$1 = utils.isNumber;
	var findWhiteSpaceStart$1 = utils.findWhiteSpaceStart;
	var findWhiteSpaceEnd$1 = utils.findWhiteSpaceEnd;
	var findCommentEnd$1 = utils.findCommentEnd;
	var findStringEnd$1 = utils.findStringEnd;
	var findNumberEnd$1 = utils.findNumberEnd;
	var findIdentifierEnd$1 = utils.findIdentifierEnd;
	var findUrlRawEnd$1 = utils.findUrlRawEnd;

	var NULL = 0;
	var WHITESPACE$1 = TYPE$2.WhiteSpace;
	var IDENTIFIER$1 = TYPE$2.Identifier;
	var NUMBER$1 = TYPE$2.Number;
	var STRING$1 = TYPE$2.String;
	var COMMENT$1 = TYPE$2.Comment;
	var PUNCTUATOR$2 = TYPE$2.Punctuator;
	var CDO$1 = TYPE$2.CDO;
	var CDC$1 = TYPE$2.CDC;
	var ATKEYWORD$1 = TYPE$2.AtKeyword;
	var FUNCTION$1 = TYPE$2.Function;
	var URL$2 = TYPE$2.Url;
	var RAW$1 = TYPE$2.Raw;

	var N$2 = 10;
	var F$2 = 12;
	var R$2 = 13;
	var STAR = TYPE$2.Asterisk;
	var SLASH = TYPE$2.Solidus;
	var FULLSTOP$1 = TYPE$2.FullStop;
	var PLUSSIGN$1 = TYPE$2.PlusSign;
	var HYPHENMINUS$1 = TYPE$2.HyphenMinus;
	var GREATERTHANSIGN = TYPE$2.GreaterThanSign;
	var LESSTHANSIGN = TYPE$2.LessThanSign;
	var EXCLAMATIONMARK = TYPE$2.ExclamationMark;
	var COMMERCIALAT = TYPE$2.CommercialAt;
	var QUOTATIONMARK = TYPE$2.QuotationMark;
	var APOSTROPHE = TYPE$2.Apostrophe;
	var LEFTPARENTHESIS = TYPE$2.LeftParenthesis;
	var RIGHTPARENTHESIS = TYPE$2.RightParenthesis;
	var LEFTCURLYBRACKET = TYPE$2.LeftCurlyBracket;
	var RIGHTCURLYBRACKET = TYPE$2.RightCurlyBracket;
	var LEFTSQUAREBRACKET = TYPE$2.LeftSquareBracket;
	var RIGHTSQUAREBRACKET = TYPE$2.RightSquareBracket;

	var MIN_BUFFER_SIZE = 16 * 1024;
	var OFFSET_MASK = 0x00FFFFFF;
	var TYPE_SHIFT = 24;
	var SafeUint32Array$1 = typeof Uint32Array !== 'undefined' ? Uint32Array : Array; // fallback on Array when TypedArray is not supported

	function computeLinesAndColumns(tokenizer, source) {
	    var sourceLength = source.length;
	    var start = firstCharOffset$1(source);
	    var lines = tokenizer.lines;
	    var line = tokenizer.startLine;
	    var columns = tokenizer.columns;
	    var column = tokenizer.startColumn;

	    if (lines === null || lines.length < sourceLength + 1) {
	        lines = new SafeUint32Array$1(Math.max(sourceLength + 1024, MIN_BUFFER_SIZE));
	        columns = new SafeUint32Array$1(lines.length);
	    }

	    for (var i = start; i < sourceLength; i++) {
	        var code = source.charCodeAt(i);

	        lines[i] = line;
	        columns[i] = column++;

	        if (code === N$2 || code === R$2 || code === F$2) {
	            if (code === R$2 && i + 1 < sourceLength && source.charCodeAt(i + 1) === N$2) {
	                i++;
	                lines[i] = line;
	                columns[i] = column;
	            }

	            line++;
	            column = 1;
	        }
	    }

	    lines[i] = line;
	    columns[i] = column;

	    tokenizer.linesAnsColumnsComputed = true;
	    tokenizer.lines = lines;
	    tokenizer.columns = columns;
	}

	function tokenLayout(tokenizer, source, startPos) {
	    var sourceLength = source.length;
	    var offsetAndType = tokenizer.offsetAndType;
	    var balance = tokenizer.balance;
	    var tokenCount = 0;
	    var prevType = 0;
	    var offset = startPos;
	    var anchor = 0;
	    var balanceCloseCode = 0;
	    var balanceStart = 0;
	    var balancePrev = 0;

	    if (offsetAndType === null || offsetAndType.length < sourceLength + 1) {
	        offsetAndType = new SafeUint32Array$1(sourceLength + 1024);
	        balance = new SafeUint32Array$1(sourceLength + 1024);
	    }

	    while (offset < sourceLength) {
	        var code = source.charCodeAt(offset);
	        var type = code < 0x80 ? SYMBOL_TYPE$1[code] : IDENTIFIER$1;

	        balance[tokenCount] = sourceLength;

	        switch (type) {
	            case WHITESPACE$1:
	                offset = findWhiteSpaceEnd$1(source, offset + 1);
	                break;

	            case PUNCTUATOR$2:
	                switch (code) {
	                    case balanceCloseCode:
	                        balancePrev = balanceStart & OFFSET_MASK;
	                        balanceStart = balance[balancePrev];
	                        balanceCloseCode = balanceStart >> TYPE_SHIFT;
	                        balance[tokenCount] = balancePrev;
	                        balance[balancePrev++] = tokenCount;
	                        for (; balancePrev < tokenCount; balancePrev++) {
	                            if (balance[balancePrev] === sourceLength) {
	                                balance[balancePrev] = tokenCount;
	                            }
	                        }
	                        break;

	                    case LEFTSQUAREBRACKET:
	                        balance[tokenCount] = balanceStart;
	                        balanceCloseCode = RIGHTSQUAREBRACKET;
	                        balanceStart = (balanceCloseCode << TYPE_SHIFT) | tokenCount;
	                        break;

	                    case LEFTCURLYBRACKET:
	                        balance[tokenCount] = balanceStart;
	                        balanceCloseCode = RIGHTCURLYBRACKET;
	                        balanceStart = (balanceCloseCode << TYPE_SHIFT) | tokenCount;
	                        break;

	                    case LEFTPARENTHESIS:
	                        balance[tokenCount] = balanceStart;
	                        balanceCloseCode = RIGHTPARENTHESIS;
	                        balanceStart = (balanceCloseCode << TYPE_SHIFT) | tokenCount;
	                        break;
	                }

	                // /*
	                if (code === STAR && prevType === SLASH) {
	                    type = COMMENT$1;
	                    offset = findCommentEnd$1(source, offset + 1);
	                    tokenCount--; // rewrite prev token
	                    break;
	                }

	                // edge case for -.123 and +.123
	                if (code === FULLSTOP$1 && (prevType === PLUSSIGN$1 || prevType === HYPHENMINUS$1)) {
	                    if (offset + 1 < sourceLength && isNumber$1(source.charCodeAt(offset + 1))) {
	                        type = NUMBER$1;
	                        offset = findNumberEnd$1(source, offset + 2, false);
	                        tokenCount--; // rewrite prev token
	                        break;
	                    }
	                }

	                // <!--
	                if (code === EXCLAMATIONMARK && prevType === LESSTHANSIGN) {
	                    if (offset + 2 < sourceLength &&
	                        source.charCodeAt(offset + 1) === HYPHENMINUS$1 &&
	                        source.charCodeAt(offset + 2) === HYPHENMINUS$1) {
	                        type = CDO$1;
	                        offset = offset + 3;
	                        tokenCount--; // rewrite prev token
	                        break;
	                    }
	                }

	                // -->
	                if (code === HYPHENMINUS$1 && prevType === HYPHENMINUS$1) {
	                    if (offset + 1 < sourceLength && source.charCodeAt(offset + 1) === GREATERTHANSIGN) {
	                        type = CDC$1;
	                        offset = offset + 2;
	                        tokenCount--; // rewrite prev token
	                        break;
	                    }
	                }

	                // ident(
	                if (code === LEFTPARENTHESIS && prevType === IDENTIFIER$1) {
	                    offset = offset + 1;
	                    tokenCount--; // rewrite prev token
	                    balance[tokenCount] = balance[tokenCount + 1];
	                    balanceStart--;

	                    // 4 char length identifier and equal to `url(` (case insensitive)
	                    if (offset - anchor === 4 && cmpStr$1(source, anchor, offset, 'url(')) {
	                        // special case for url() because it can contain any symbols sequence with few exceptions
	                        anchor = findWhiteSpaceEnd$1(source, offset);
	                        code = source.charCodeAt(anchor);
	                        if (code !== LEFTPARENTHESIS &&
	                            code !== RIGHTPARENTHESIS &&
	                            code !== QUOTATIONMARK &&
	                            code !== APOSTROPHE) {
	                            // url(
	                            offsetAndType[tokenCount++] = (URL$2 << TYPE_SHIFT) | offset;
	                            balance[tokenCount] = sourceLength;

	                            // ws*
	                            if (anchor !== offset) {
	                                offsetAndType[tokenCount++] = (WHITESPACE$1 << TYPE_SHIFT) | anchor;
	                                balance[tokenCount] = sourceLength;
	                            }

	                            // raw
	                            type = RAW$1;
	                            offset = findUrlRawEnd$1(source, anchor);
	                        } else {
	                            type = URL$2;
	                        }
	                    } else {
	                        type = FUNCTION$1;
	                    }
	                    break;
	                }

	                type = code;
	                offset = offset + 1;
	                break;

	            case NUMBER$1:
	                offset = findNumberEnd$1(source, offset + 1, prevType !== FULLSTOP$1);

	                // merge number with a preceding dot, dash or plus
	                if (prevType === FULLSTOP$1 ||
	                    prevType === HYPHENMINUS$1 ||
	                    prevType === PLUSSIGN$1) {
	                    tokenCount--; // rewrite prev token
	                }

	                break;

	            case STRING$1:
	                offset = findStringEnd$1(source, offset + 1, code);
	                break;

	            default:
	                anchor = offset;
	                offset = findIdentifierEnd$1(source, offset);

	                // merge identifier with a preceding dash
	                if (prevType === HYPHENMINUS$1) {
	                    // rewrite prev token
	                    tokenCount--;
	                    // restore prev prev token type
	                    // for case @-prefix-ident
	                    prevType = tokenCount === 0 ? 0 : offsetAndType[tokenCount - 1] >> TYPE_SHIFT;
	                }

	                if (prevType === COMMERCIALAT) {
	                    // rewrite prev token and change type to <at-keyword-token>
	                    tokenCount--;
	                    type = ATKEYWORD$1;
	                }
	        }

	        offsetAndType[tokenCount++] = (type << TYPE_SHIFT) | offset;
	        prevType = type;
	    }

	    // finalize arrays
	    offsetAndType[tokenCount] = offset;
	    balance[tokenCount] = sourceLength;
	    balance[sourceLength] = sourceLength; // prevents false positive balance match with any token
	    while (balanceStart !== 0) {
	        balancePrev = balanceStart & OFFSET_MASK;
	        balanceStart = balance[balancePrev];
	        balance[balancePrev] = sourceLength;
	    }

	    tokenizer.offsetAndType = offsetAndType;
	    tokenizer.tokenCount = tokenCount;
	    tokenizer.balance = balance;
	}

	//
	// tokenizer
	//

	var Tokenizer = function(source, startOffset, startLine, startColumn) {
	    this.offsetAndType = null;
	    this.balance = null;
	    this.lines = null;
	    this.columns = null;

	    this.setSource(source, startOffset, startLine, startColumn);
	};

	Tokenizer.prototype = {
	    setSource: function(source, startOffset, startLine, startColumn) {
	        var safeSource = String(source || '');
	        var start = firstCharOffset$1(safeSource);

	        this.source = safeSource;
	        this.firstCharOffset = start;
	        this.startOffset = typeof startOffset === 'undefined' ? 0 : startOffset;
	        this.startLine = typeof startLine === 'undefined' ? 1 : startLine;
	        this.startColumn = typeof startColumn === 'undefined' ? 1 : startColumn;
	        this.linesAnsColumnsComputed = false;

	        this.eof = false;
	        this.currentToken = -1;
	        this.tokenType = 0;
	        this.tokenStart = start;
	        this.tokenEnd = start;

	        tokenLayout(this, safeSource, start);
	        this.next();
	    },

	    lookupType: function(offset) {
	        offset += this.currentToken;

	        if (offset < this.tokenCount) {
	            return this.offsetAndType[offset] >> TYPE_SHIFT;
	        }

	        return NULL;
	    },
	    lookupNonWSType: function(offset) {
	        offset += this.currentToken;

	        for (var type; offset < this.tokenCount; offset++) {
	            type = this.offsetAndType[offset] >> TYPE_SHIFT;

	            if (type !== WHITESPACE$1) {
	                return type;
	            }
	        }

	        return NULL;
	    },
	    lookupValue: function(offset, referenceStr) {
	        offset += this.currentToken;

	        if (offset < this.tokenCount) {
	            return cmpStr$1(
	                this.source,
	                this.offsetAndType[offset - 1] & OFFSET_MASK,
	                this.offsetAndType[offset] & OFFSET_MASK,
	                referenceStr
	            );
	        }

	        return false;
	    },
	    getTokenStart: function(tokenNum) {
	        if (tokenNum === this.currentToken) {
	            return this.tokenStart;
	        }

	        if (tokenNum > 0) {
	            return tokenNum < this.tokenCount
	                ? this.offsetAndType[tokenNum - 1] & OFFSET_MASK
	                : this.offsetAndType[this.tokenCount] & OFFSET_MASK;
	        }

	        return this.firstCharOffset;
	    },
	    getOffsetExcludeWS: function() {
	        if (this.currentToken > 0) {
	            if ((this.offsetAndType[this.currentToken - 1] >> TYPE_SHIFT) === WHITESPACE$1) {
	                return this.currentToken > 1
	                    ? this.offsetAndType[this.currentToken - 2] & OFFSET_MASK
	                    : this.firstCharOffset;
	            }
	        }
	        return this.tokenStart;
	    },
	    getRawLength: function(startToken, endTokenType1, endTokenType2, includeTokenType2) {
	        var cursor = startToken;
	        var balanceEnd;

	        loop:
	        for (; cursor < this.tokenCount; cursor++) {
	            balanceEnd = this.balance[cursor];

	            // belance end points to offset before start
	            if (balanceEnd < startToken) {
	                break loop;
	            }

	            // check token is stop type
	            switch (this.offsetAndType[cursor] >> TYPE_SHIFT) {
	                case endTokenType1:
	                    break loop;

	                case endTokenType2:
	                    if (includeTokenType2) {
	                        cursor++;
	                    }
	                    break loop;

	                default:
	                    // fast forward to the end of balanced block
	                    if (this.balance[balanceEnd] === cursor) {
	                        cursor = balanceEnd;
	                    }
	            }

	        }

	        return cursor - this.currentToken;
	    },
	    isBalanceEdge: function(pos) {
	        var balanceStart = this.balance[this.currentToken];
	        return balanceStart < pos;
	    },

	    getTokenValue: function() {
	        return this.source.substring(this.tokenStart, this.tokenEnd);
	    },
	    substrToCursor: function(start) {
	        return this.source.substring(start, this.tokenStart);
	    },

	    skipWS: function() {
	        for (var i = this.currentToken, skipTokenCount = 0; i < this.tokenCount; i++, skipTokenCount++) {
	            if ((this.offsetAndType[i] >> TYPE_SHIFT) !== WHITESPACE$1) {
	                break;
	            }
	        }

	        if (skipTokenCount > 0) {
	            this.skip(skipTokenCount);
	        }
	    },
	    skipSC: function() {
	        while (this.tokenType === WHITESPACE$1 || this.tokenType === COMMENT$1) {
	            this.next();
	        }
	    },
	    skip: function(tokenCount) {
	        var next = this.currentToken + tokenCount;

	        if (next < this.tokenCount) {
	            this.currentToken = next;
	            this.tokenStart = this.offsetAndType[next - 1] & OFFSET_MASK;
	            next = this.offsetAndType[next];
	            this.tokenType = next >> TYPE_SHIFT;
	            this.tokenEnd = next & OFFSET_MASK;
	        } else {
	            this.currentToken = this.tokenCount;
	            this.next();
	        }
	    },
	    next: function() {
	        var next = this.currentToken + 1;

	        if (next < this.tokenCount) {
	            this.currentToken = next;
	            this.tokenStart = this.tokenEnd;
	            next = this.offsetAndType[next];
	            this.tokenType = next >> TYPE_SHIFT;
	            this.tokenEnd = next & OFFSET_MASK;
	        } else {
	            this.currentToken = this.tokenCount;
	            this.eof = true;
	            this.tokenType = NULL;
	            this.tokenStart = this.tokenEnd = this.source.length;
	        }
	    },

	    eat: function(tokenType) {
	        if (this.tokenType !== tokenType) {
	            var offset = this.tokenStart;
	            var message = NAME$1[tokenType] + ' is expected';

	            // tweak message and offset
	            if (tokenType === IDENTIFIER$1) {
	                // when identifier is expected but there is a function or url
	                if (this.tokenType === FUNCTION$1 || this.tokenType === URL$2) {
	                    offset = this.tokenEnd - 1;
	                    message += ' but function found';
	                }
	            } else {
	                // when test type is part of another token show error for current position + 1
	                // e.g. eat(HYPHENMINUS) will fail on "-foo", but pointing on "-" is odd
	                if (this.source.charCodeAt(this.tokenStart) === tokenType) {
	                    offset = offset + 1;
	                }
	            }

	            this.error(message, offset);
	        }

	        this.next();
	    },
	    eatNonWS: function(tokenType) {
	        this.skipWS();
	        this.eat(tokenType);
	    },

	    consume: function(tokenType) {
	        var value = this.getTokenValue();

	        this.eat(tokenType);

	        return value;
	    },
	    consumeFunctionName: function() {
	        var name = this.source.substring(this.tokenStart, this.tokenEnd - 1);

	        this.eat(FUNCTION$1);

	        return name;
	    },
	    consumeNonWS: function(tokenType) {
	        this.skipWS();

	        return this.consume(tokenType);
	    },

	    expectIdentifier: function(name) {
	        if (this.tokenType !== IDENTIFIER$1 || cmpStr$1(this.source, this.tokenStart, this.tokenEnd, name) === false) {
	            this.error('Identifier `' + name + '` is expected');
	        }

	        this.next();
	    },

	    getLocation: function(offset, filename) {
	        if (!this.linesAnsColumnsComputed) {
	            computeLinesAndColumns(this, this.source);
	        }

	        return {
	            source: filename,
	            offset: this.startOffset + offset,
	            line: this.lines[offset],
	            column: this.columns[offset]
	        };
	    },

	    getLocationRange: function(start, end, filename) {
	        if (!this.linesAnsColumnsComputed) {
	            computeLinesAndColumns(this, this.source);
	        }

	        return {
	            source: filename,
	            start: {
	                offset: this.startOffset + start,
	                line: this.lines[start],
	                column: this.columns[start]
	            },
	            end: {
	                offset: this.startOffset + end,
	                line: this.lines[end],
	                column: this.columns[end]
	            }
	        };
	    },

	    error: function(message, offset) {
	        var location = typeof offset !== 'undefined' && offset < this.source.length
	            ? this.getLocation(offset)
	            : this.eof
	                ? this.getLocation(findWhiteSpaceStart$1(this.source, this.source.length - 1))
	                : this.getLocation(this.tokenStart);

	        throw new error(
	            message || 'Unexpected input',
	            this.source,
	            location.offset,
	            location.line,
	            location.column
	        );
	    },

	    dump: function() {
	        var offset = 0;

	        return Array.prototype.slice.call(this.offsetAndType, 0, this.tokenCount).map(function(item, idx) {
	            var start = offset;
	            var end = item & OFFSET_MASK;

	            offset = end;

	            return {
	                idx: idx,
	                type: NAME$1[item >> TYPE_SHIFT],
	                chunk: this.source.substring(start, end),
	                balance: this.balance[idx]
	            };
	        }, this);
	    }
	};

	// extend with error class
	Tokenizer.CssSyntaxError = error;

	// extend tokenizer with constants
	Object.keys(_const).forEach(function(key) {
	    Tokenizer[key] = _const[key];
	});

	// extend tokenizer with static methods from utils
	Object.keys(utils).forEach(function(key) {
	    Tokenizer[key] = utils[key];
	});

	// warm up tokenizer to elimitate code branches that never execute
	// fix soft deoptimizations (insufficient type feedback)
	new Tokenizer('\n\r\r\n\f<!---->//""\'\'/*\r\n\f*/1a;.\\31\t\+2{url(a);func();+1.2e3 -.4e-5 .6e+7}').getLocation();

	var Tokenizer_1 = Tokenizer;

	var tokenizer = Tokenizer_1;

	function noop$1(value) {
	    return value;
	}

	function generateMultiplier(multiplier) {
	    if (multiplier.min === 0 && multiplier.max === 0) {
	        return '*';
	    }

	    if (multiplier.min === 0 && multiplier.max === 1) {
	        return '?';
	    }

	    if (multiplier.min === 1 && multiplier.max === 0) {
	        return multiplier.comma ? '#' : '+';
	    }

	    if (multiplier.min === 1 && multiplier.max === 1) {
	        return '';
	    }

	    return (
	        (multiplier.comma ? '#' : '') +
	        (multiplier.min === multiplier.max
	            ? '{' + multiplier.min + '}'
	            : '{' + multiplier.min + ',' + (multiplier.max !== 0 ? multiplier.max : '') + '}'
	        )
	    );
	}

	function generateSequence(node, forceBraces, decorate) {
	    var result = node.terms.map(function(term) {
	        return generate(term, forceBraces, decorate);
	    }).join(node.combinator === ' ' ? ' ' : ' ' + node.combinator + ' ');

	    if (node.explicit || forceBraces) {
	        result = (result[0] !== ',' ? '[ ' : '[') + result + ' ]';
	    }

	    return result;
	}

	function generate(node, forceBraces, decorate) {
	    var result;

	    switch (node.type) {
	        case 'Group':
	            result =
	                generateSequence(node, forceBraces, decorate) +
	                (node.disallowEmpty ? '!' : '');
	            break;

	        case 'Multiplier':
	            // return since node is a composition
	            return (
	                generate(node.term, forceBraces, decorate) +
	                decorate(generateMultiplier(node), node)
	            );

	        case 'Type':
	            result = '<' + node.name + '>';
	            break;

	        case 'Property':
	            result = '<\'' + node.name + '\'>';
	            break;

	        case 'Keyword':
	            result = node.name;
	            break;

	        case 'AtKeyword':
	            result = '@' + node.name;
	            break;

	        case 'Function':
	            result = node.name + '(';
	            break;

	        case 'String':
	        case 'Token':
	            result = node.value;
	            break;

	        case 'Comma':
	            result = ',';
	            break;

	        default:
	            throw new Error('Unknown node type `' + node.type + '`');
	    }

	    return decorate(result, node);
	}

	var generate_1 = function(node, options) {
	    var decorate = noop$1;
	    var forceBraces = false;

	    if (typeof options === 'function') {
	        decorate = options;
	    } else if (options) {
	        forceBraces = Boolean(options.forceBraces);
	        if (typeof options.decorate === 'function') {
	            decorate = options.decorate;
	        }
	    }

	    return generate(node, forceBraces, decorate);
	};

	function fromMatchResult(matchResult) {
	    var tokens = matchResult.tokens;
	    var longestMatch = matchResult.longestMatch;
	    var node = longestMatch < tokens.length ? tokens[longestMatch].node : null;
	    var mismatchOffset = 0;
	    var entries = 0;
	    var css = '';

	    for (var i = 0; i < tokens.length; i++) {
	        if (i === longestMatch) {
	            mismatchOffset = css.length;
	        }

	        if (node !== null && tokens[i].node === node) {
	            if (i <= longestMatch) {
	                entries++;
	            } else {
	                entries = 0;
	            }
	        }

	        css += tokens[i].value;
	    }

	    if (node === null) {
	        mismatchOffset = css.length;
	    }

	    return {
	        node: node,
	        css: css,
	        mismatchOffset: mismatchOffset,
	        last: node === null || entries > 1
	    };
	}

	function getLocation(node, point) {
	    var loc = node && node.loc && node.loc[point];

	    if (loc) {
	        return {
	            offset: loc.offset,
	            line: loc.line,
	            column: loc.column
	        };
	    }

	    return null;
	}

	var SyntaxReferenceError = function(type, referenceName) {
	    var error = createCustomError(
	        'SyntaxReferenceError',
	        type + (referenceName ? ' `' + referenceName + '`' : '')
	    );

	    error.reference = referenceName;

	    return error;
	};

	var MatchError = function(message, lexer, syntax, node, matchResult) {
	    var error = createCustomError('SyntaxMatchError', message);
	    var details = fromMatchResult(matchResult);
	    var mismatchOffset = details.mismatchOffset || 0;
	    var badNode = details.node || node;
	    var end = getLocation(badNode, 'end');
	    var start = details.last ? end : getLocation(badNode, 'start');
	    var css = details.css;

	    error.rawMessage = message;
	    error.syntax = syntax ? generate_1(syntax) : '<generic>';
	    error.css = css;
	    error.mismatchOffset = mismatchOffset;
	    error.loc = {
	        source: (badNode && badNode.loc && badNode.loc.source) || '<unknown>',
	        start: start,
	        end: end
	    };
	    error.line = start ? start.line : undefined;
	    error.column = start ? start.column : undefined;
	    error.offset = start ? start.offset : undefined;
	    error.message = message + '\n' +
	        '  syntax: ' + error.syntax + '\n' +
	        '   value: ' + (error.css || '<empty string>') + '\n' +
	        '  --------' + new Array(error.mismatchOffset + 1).join('-') + '^';

	    return error;
	};

	var error$1 = {
	    SyntaxReferenceError: SyntaxReferenceError,
	    MatchError: MatchError
	};

	var hasOwnProperty = Object.prototype.hasOwnProperty;
	var keywords = Object.create(null);
	var properties = Object.create(null);
	var HYPHENMINUS$2 = 45; // '-'.charCodeAt()

	function isCustomProperty(str, offset) {
	    offset = offset || 0;

	    return str.length - offset >= 2 &&
	           str.charCodeAt(offset) === HYPHENMINUS$2 &&
	           str.charCodeAt(offset + 1) === HYPHENMINUS$2;
	}

	function getVendorPrefix(str, offset) {
	    offset = offset || 0;

	    // verdor prefix should be at least 3 chars length
	    if (str.length - offset >= 3) {
	        // vendor prefix starts with hyper minus following non-hyper minus
	        if (str.charCodeAt(offset) === HYPHENMINUS$2 &&
	            str.charCodeAt(offset + 1) !== HYPHENMINUS$2) {
	            // vendor prefix should contain a hyper minus at the ending
	            var secondDashIndex = str.indexOf('-', offset + 2);

	            if (secondDashIndex !== -1) {
	                return str.substring(offset, secondDashIndex + 1);
	            }
	        }
	    }

	    return '';
	}

	function getKeywordDescriptor(keyword) {
	    if (hasOwnProperty.call(keywords, keyword)) {
	        return keywords[keyword];
	    }

	    var name = keyword.toLowerCase();

	    if (hasOwnProperty.call(keywords, name)) {
	        return keywords[keyword] = keywords[name];
	    }

	    var custom = isCustomProperty(name, 0);
	    var vendor = !custom ? getVendorPrefix(name, 0) : '';

	    return keywords[keyword] = Object.freeze({
	        basename: name.substr(vendor.length),
	        name: name,
	        vendor: vendor,
	        prefix: vendor,
	        custom: custom
	    });
	}

	function getPropertyDescriptor(property) {
	    if (hasOwnProperty.call(properties, property)) {
	        return properties[property];
	    }

	    var name = property;
	    var hack = property[0];

	    if (hack === '/') {
	        hack = property[1] === '/' ? '//' : '/';
	    } else if (hack !== '_' &&
	               hack !== '*' &&
	               hack !== '$' &&
	               hack !== '#' &&
	               hack !== '+') {
	        hack = '';
	    }

	    var custom = isCustomProperty(name, hack.length);

	    // re-use result when possible (the same as for lower case)
	    if (!custom) {
	        name = name.toLowerCase();
	        if (hasOwnProperty.call(properties, name)) {
	            return properties[property] = properties[name];
	        }
	    }

	    var vendor = !custom ? getVendorPrefix(name, hack.length) : '';
	    var prefix = name.substr(0, hack.length + vendor.length);

	    return properties[property] = Object.freeze({
	        basename: name.substr(prefix.length),
	        name: name.substr(hack.length),
	        hack: hack,
	        vendor: vendor,
	        prefix: prefix,
	        custom: custom
	    });
	}

	var names = {
	    keyword: getKeywordDescriptor,
	    property: getPropertyDescriptor,
	    isCustomProperty: isCustomProperty,
	    vendorPrefix: getVendorPrefix
	};

	var findIdentifierEnd$2 = utils.findIdentifierEnd;
	var findNumberEnd$2 = utils.findNumberEnd;
	var findDecimalNumberEnd$1 = utils.findDecimalNumberEnd;
	var isHex$1 = utils.isHex;

	var SYMBOL_TYPE$2 = _const.SYMBOL_TYPE;
	var IDENTIFIER$2 = _const.TYPE.Identifier;
	var PLUSSIGN$2 = _const.TYPE.PlusSign;
	var HYPHENMINUS$3 = _const.TYPE.HyphenMinus;
	var NUMBERSIGN = _const.TYPE.NumberSign;

	var PERCENTAGE = {
	    '%': true
	};

	// https://www.w3.org/TR/css-values-3/#lengths
	var LENGTH = {
	    // absolute length units
	    'px': true,
	    'mm': true,
	    'cm': true,
	    'in': true,
	    'pt': true,
	    'pc': true,
	    'q': true,

	    // relative length units
	    'em': true,
	    'ex': true,
	    'ch': true,
	    'rem': true,

	    // viewport-percentage lengths
	    'vh': true,
	    'vw': true,
	    'vmin': true,
	    'vmax': true,
	    'vm': true
	};

	var ANGLE = {
	    'deg': true,
	    'grad': true,
	    'rad': true,
	    'turn': true
	};

	var TIME = {
	    's': true,
	    'ms': true
	};

	var FREQUENCY = {
	    'hz': true,
	    'khz': true
	};

	// https://www.w3.org/TR/css-values-3/#resolution (https://drafts.csswg.org/css-values/#resolution)
	var RESOLUTION = {
	    'dpi': true,
	    'dpcm': true,
	    'dppx': true,
	    'x': true      // https://github.com/w3c/csswg-drafts/issues/461
	};

	// https://drafts.csswg.org/css-grid/#fr-unit
	var FLEX = {
	    'fr': true
	};

	// https://www.w3.org/TR/css3-speech/#mixing-props-voice-volume
	var DECIBEL = {
	    'db': true
	};

	// https://www.w3.org/TR/css3-speech/#voice-props-voice-pitch
	var SEMITONES = {
	    'st': true
	};

	function consumeFunction(token, addTokenToMatch, getNextToken) {
	    var length = 1;
	    var cursor;

	    do {
	        cursor = getNextToken(length++);
	    } while (cursor !== null && cursor.node !== token.node);

	    if (cursor === null) {
	        return false;
	    }

	    while (true) {
	        // consume tokens until cursor
	        if (addTokenToMatch() === cursor) {
	            break;
	        }
	    }

	    return true;
	}

	// TODO: implement
	// can be used wherever <length>, <frequency>, <angle>, <time>, <percentage>, <number>, or <integer> values are allowed
	// https://drafts.csswg.org/css-values/#calc-notation
	function calc(token, addTokenToMatch, getNextToken) {
	    if (token === null) {
	        return false;
	    }

	    var name = token.value.toLowerCase();
	    if (name !== 'calc(' &&
	        name !== '-moz-calc(' &&
	        name !== '-webkit-calc(') {
	        return false;
	    }

	    return consumeFunction(token, addTokenToMatch, getNextToken);
	}

	function attr$1(token, addTokenToMatch, getNextToken) {
	    if (token === null || token.value.toLowerCase() !== 'attr(') {
	        return false;
	    }

	    return consumeFunction(token, addTokenToMatch, getNextToken);
	}

	function expression(token, addTokenToMatch, getNextToken) {
	    if (token === null || token.value.toLowerCase() !== 'expression(') {
	        return false;
	    }

	    return consumeFunction(token, addTokenToMatch, getNextToken);
	}

	function url(token, addTokenToMatch, getNextToken) {
	    if (token === null || token.value.toLowerCase() !== 'url(') {
	        return false;
	    }

	    return consumeFunction(token, addTokenToMatch, getNextToken);
	}

	function idSelector(token, addTokenToMatch) {
	    if (token === null) {
	        return false;
	    }

	    if (token.value.charCodeAt(0) !== NUMBERSIGN) {
	        return false;
	    }

	    if (consumeIdentifier(token.value, 1) !== token.value.length) {
	        return false;
	    }

	    addTokenToMatch();
	    return true;
	}

	function isNumber$2(str) {
	    return /^[-+]?(\d+|\d*\.\d+)([eE][-+]?\d+)?$/.test(str);
	}

	function consumeNumber(str, allowFraction) {
	    var code = str.charCodeAt(0);

	    return findNumberEnd$2(str, code === PLUSSIGN$2 || code === HYPHENMINUS$3 ? 1 : 0, allowFraction);
	}

	function consumeIdentifier(str, offset) {
	    var code = str.charCodeAt(offset);

	    if (code < 0x80 && SYMBOL_TYPE$2[code] !== IDENTIFIER$2 && code !== HYPHENMINUS$3) {
	        return offset;
	    }

	    return findIdentifierEnd$2(str, offset + 1);
	}

	function astNode(type) {
	    return function(token, addTokenToMatch) {
	        if (token === null || token.node.type !== type) {
	            return false;
	        }

	        addTokenToMatch();
	        return true;
	    };
	}

	function dimension(type) {
	    return function(token, addTokenToMatch, getNextToken) {
	        if (calc(token, addTokenToMatch, getNextToken)) {
	            return true;
	        }

	        if (token === null) {
	            return false;
	        }

	        var numberEnd = consumeNumber(token.value, true);
	        if (numberEnd === 0) {
	            return false;
	        }

	        if (type) {
	            if (!type.hasOwnProperty(token.value.substr(numberEnd).toLowerCase())) {
	                return false;
	            }
	        } else {
	            var unitEnd = consumeIdentifier(token.value, numberEnd);
	            if (unitEnd === numberEnd || unitEnd !== token.value.length) {
	                return false;
	            }
	        }

	        addTokenToMatch();
	        return true;
	    };
	}

	function zeroUnitlessDimension(type) {
	    var isDimension = dimension(type);

	    return function(token, addTokenToMatch, getNextToken) {
	        if (isDimension(token, addTokenToMatch, getNextToken)) {
	            return true;
	        }

	        if (token === null || Number(token.value) !== 0) {
	            return false;
	        }

	        addTokenToMatch();
	        return true;
	    };
	}

	function number(token, addTokenToMatch, getNextToken) {
	    if (calc(token, addTokenToMatch, getNextToken)) {
	        return true;
	    }

	    if (token === null) {
	        return false;
	    }

	    var numberEnd = consumeNumber(token.value, true);
	    if (numberEnd !== token.value.length) {
	        return false;
	    }

	    addTokenToMatch();
	    return true;
	}

	function numberZeroOne(token, addTokenToMatch, getNextToken) {
	    if (calc(token, addTokenToMatch, getNextToken)) {
	        return true;
	    }

	    if (token === null || !isNumber$2(token.value)) {
	        return false;
	    }

	    var value = Number(token.value);
	    if (value < 0 || value > 1) {
	        return false;
	    }

	    addTokenToMatch();
	    return true;
	}

	function numberOneOrGreater(token, addTokenToMatch, getNextToken) {
	    if (calc(token, addTokenToMatch, getNextToken)) {
	        return true;
	    }

	    if (token === null || !isNumber$2(token.value)) {
	        return false;
	    }

	    var value = Number(token.value);
	    if (value < 1) {
	        return false;
	    }

	    addTokenToMatch();
	    return true;
	}

	// TODO: fail on 10e-2
	function integer(token, addTokenToMatch, getNextToken) {
	    if (calc(token, addTokenToMatch, getNextToken)) {
	        return true;
	    }

	    if (token === null) {
	        return false;
	    }

	    var numberEnd = consumeNumber(token.value, false);
	    if (numberEnd !== token.value.length) {
	        return false;
	    }

	    addTokenToMatch();
	    return true;
	}

	// TODO: fail on 10e-2
	function positiveInteger(token, addTokenToMatch, getNextToken) {
	    if (calc(token, addTokenToMatch, getNextToken)) {
	        return true;
	    }

	    if (token === null) {
	        return false;
	    }

	    var numberEnd = findDecimalNumberEnd$1(token.value, 0);
	    if (numberEnd !== token.value.length || token.value.charCodeAt(0) === HYPHENMINUS$3) {
	        return false;
	    }

	    addTokenToMatch();
	    return true;
	}

	function hexColor(token, addTokenToMatch) {
	    if (token === null || token.value.charCodeAt(0) !== NUMBERSIGN) {
	        return false;
	    }

	    var length = token.value.length - 1;

	    // valid length is 3, 4, 6 and 8 (+1 for #)
	    if (length !== 3 && length !== 4 && length !== 6 && length !== 8) {
	        return false;
	    }

	    for (var i = 1; i < length; i++) {
	        if (!isHex$1(token.value.charCodeAt(i))) {
	            return false;
	        }
	    }

	    addTokenToMatch();
	    return true;
	}

	// https://developer.mozilla.org/en-US/docs/Web/CSS/custom-ident
	// https://drafts.csswg.org/css-values-4/#identifier-value
	function customIdent(token, addTokenToMatch) {
	    if (token === null) {
	        return false;
	    }

	    var identEnd = consumeIdentifier(token.value, 0);
	    if (identEnd !== token.value.length) {
	        return false;
	    }

	    var name = token.value.toLowerCase();

	    // § 3.2. Author-defined Identifiers: the <custom-ident> type
	    // The CSS-wide keywords are not valid <custom-ident>s
	    if (name === 'unset' || name === 'initial' || name === 'inherit') {
	        return false;
	    }

	    // The default keyword is reserved and is also not a valid <custom-ident>
	    if (name === 'default') {
	        return false;
	    }

	    // TODO: ignore property specific keywords (as described https://developer.mozilla.org/en-US/docs/Web/CSS/custom-ident)

	    addTokenToMatch();
	    return true;
	}

	var generic = {
	    'angle': zeroUnitlessDimension(ANGLE),
	    'attr()': attr$1,
	    'custom-ident': customIdent,
	    'decibel': dimension(DECIBEL),
	    'dimension': dimension(),
	    'frequency': dimension(FREQUENCY),
	    'flex': dimension(FLEX),
	    'hex-color': hexColor,
	    'id-selector': idSelector, // element( <id-selector> )
	    'ident': astNode('Identifier'),
	    'integer': integer,
	    'length': zeroUnitlessDimension(LENGTH),
	    'number': number,
	    'number-zero-one': numberZeroOne,
	    'number-one-or-greater': numberOneOrGreater,
	    'percentage': dimension(PERCENTAGE),
	    'positive-integer': positiveInteger,
	    'resolution': dimension(RESOLUTION),
	    'semitones': dimension(SEMITONES),
	    'string': astNode('String'),
	    'time': dimension(TIME),
	    'unicode-range': astNode('UnicodeRange'),
	    'url': url,

	    // old IE stuff
	    'progid': astNode('Raw'),
	    'expression': expression
	};

	var SyntaxParseError = function(message, input, offset) {
	    var error = createCustomError('SyntaxParseError', message);

	    error.input = input;
	    error.offset = offset;
	    error.rawMessage = message;
	    error.message = error.rawMessage + '\n' +
	        '  ' + error.input + '\n' +
	        '--' + new Array((error.offset || error.input.length) + 1).join('-') + '^';

	    return error;
	};

	var error$2 = {
	    SyntaxParseError: SyntaxParseError
	};

	var SyntaxParseError$1 = error$2.SyntaxParseError;

	var TAB$2 = 9;
	var N$3 = 10;
	var F$3 = 12;
	var R$3 = 13;
	var SPACE$2 = 32;

	var Tokenizer$1 = function(str) {
	    this.str = str;
	    this.pos = 0;
	};

	Tokenizer$1.prototype = {
	    charCodeAt: function(pos) {
	        return pos < this.str.length ? this.str.charCodeAt(pos) : 0;
	    },
	    charCode: function() {
	        return this.charCodeAt(this.pos);
	    },
	    nextCharCode: function() {
	        return this.charCodeAt(this.pos + 1);
	    },
	    nextNonWsCode: function(pos) {
	        return this.charCodeAt(this.findWsEnd(pos));
	    },
	    findWsEnd: function(pos) {
	        for (; pos < this.str.length; pos++) {
	            var code = this.str.charCodeAt(pos);
	            if (code !== R$3 && code !== N$3 && code !== F$3 && code !== SPACE$2 && code !== TAB$2) {
	                break;
	            }
	        }

	        return pos;
	    },
	    substringToPos: function(end) {
	        return this.str.substring(this.pos, this.pos = end);
	    },
	    eat: function(code) {
	        if (this.charCode() !== code) {
	            this.error('Expect `' + String.fromCharCode(code) + '`');
	        }

	        this.pos++;
	    },
	    peek: function() {
	        return this.pos < this.str.length ? this.str.charAt(this.pos++) : '';
	    },
	    error: function(message) {
	        throw new SyntaxParseError$1(message, this.str, this.pos);
	    }
	};

	var tokenizer$1 = Tokenizer$1;

	var TAB$3 = 9;
	var N$4 = 10;
	var F$4 = 12;
	var R$4 = 13;
	var SPACE$3 = 32;
	var EXCLAMATIONMARK$1 = 33;    // !
	var NUMBERSIGN$1 = 35;         // #
	var AMPERSAND = 38;          // &
	var APOSTROPHE$1 = 39;         // '
	var LEFTPARENTHESIS$1 = 40;    // (
	var RIGHTPARENTHESIS$1 = 41;   // )
	var ASTERISK = 42;           // *
	var PLUSSIGN$3 = 43;           // +
	var COMMA = 44;              // ,
	var LESSTHANSIGN$1 = 60;       // <
	var GREATERTHANSIGN$1 = 62;    // >
	var QUESTIONMARK = 63;       // ?
	var COMMERCIALAT$1 = 64;       // @
	var LEFTSQUAREBRACKET$1 = 91;  // [
	var RIGHTSQUAREBRACKET$1 = 93; // ]
	var LEFTCURLYBRACKET$1 = 123;  // {
	var VERTICALLINE = 124;      // |
	var RIGHTCURLYBRACKET$1 = 125; // }
	var NAME_CHAR = createCharMap(function(ch) {
	    return /[a-zA-Z0-9\-]/.test(ch);
	});
	var COMBINATOR_PRECEDENCE = {
	    ' ': 1,
	    '&&': 2,
	    '||': 3,
	    '|': 4
	};

	function createCharMap(fn) {
	    var array = typeof Uint32Array === 'function' ? new Uint32Array(128) : new Array(128);
	    for (var i = 0; i < 128; i++) {
	        array[i] = fn(String.fromCharCode(i)) ? 1 : 0;
	    }
	    return array;
	}

	function scanSpaces(tokenizer) {
	    return tokenizer.substringToPos(
	        tokenizer.findWsEnd(tokenizer.pos + 1)
	    );
	}

	function scanWord(tokenizer) {
	    var end = tokenizer.pos;

	    for (; end < tokenizer.str.length; end++) {
	        var code = tokenizer.str.charCodeAt(end);
	        if (code >= 128 || NAME_CHAR[code] === 0) {
	            break;
	        }
	    }

	    if (tokenizer.pos === end) {
	        tokenizer.error('Expect a keyword');
	    }

	    return tokenizer.substringToPos(end);
	}

	function scanNumber(tokenizer) {
	    var end = tokenizer.pos;

	    for (; end < tokenizer.str.length; end++) {
	        var code = tokenizer.str.charCodeAt(end);
	        if (code < 48 || code > 57) {
	            break;
	        }
	    }

	    if (tokenizer.pos === end) {
	        tokenizer.error('Expect a number');
	    }

	    return tokenizer.substringToPos(end);
	}

	function scanString(tokenizer) {
	    var end = tokenizer.str.indexOf('\'', tokenizer.pos + 1);

	    if (end === -1) {
	        tokenizer.pos = tokenizer.str.length;
	        tokenizer.error('Expect an apostrophe');
	    }

	    return tokenizer.substringToPos(end + 1);
	}

	function readMultiplierRange(tokenizer) {
	    var min = null;
	    var max = null;

	    tokenizer.eat(LEFTCURLYBRACKET$1);

	    min = scanNumber(tokenizer);

	    if (tokenizer.charCode() === COMMA) {
	        tokenizer.pos++;
	        if (tokenizer.charCode() !== RIGHTCURLYBRACKET$1) {
	            max = scanNumber(tokenizer);
	        }
	    } else {
	        max = min;
	    }

	    tokenizer.eat(RIGHTCURLYBRACKET$1);

	    return {
	        min: Number(min),
	        max: max ? Number(max) : 0
	    };
	}

	function readMultiplier(tokenizer) {
	    var range = null;
	    var comma = false;

	    switch (tokenizer.charCode()) {
	        case ASTERISK:
	            tokenizer.pos++;

	            range = {
	                min: 0,
	                max: 0
	            };

	            break;

	        case PLUSSIGN$3:
	            tokenizer.pos++;

	            range = {
	                min: 1,
	                max: 0
	            };

	            break;

	        case QUESTIONMARK:
	            tokenizer.pos++;

	            range = {
	                min: 0,
	                max: 1
	            };

	            break;

	        case NUMBERSIGN$1:
	            tokenizer.pos++;

	            comma = true;

	            if (tokenizer.charCode() === LEFTCURLYBRACKET$1) {
	                range = readMultiplierRange(tokenizer);
	            } else {
	                range = {
	                    min: 1,
	                    max: 0
	                };
	            }

	            break;

	        case LEFTCURLYBRACKET$1:
	            range = readMultiplierRange(tokenizer);
	            break;

	        default:
	            return null;
	    }

	    return {
	        type: 'Multiplier',
	        comma: comma,
	        min: range.min,
	        max: range.max,
	        term: null
	    };
	}

	function maybeMultiplied(tokenizer, node) {
	    var multiplier = readMultiplier(tokenizer);

	    if (multiplier !== null) {
	        multiplier.term = node;
	        return multiplier;
	    }

	    return node;
	}

	function maybeToken(tokenizer) {
	    var ch = tokenizer.peek();

	    if (ch === '') {
	        return null;
	    }

	    return {
	        type: 'Token',
	        value: ch
	    };
	}

	function readProperty(tokenizer) {
	    var name;

	    tokenizer.eat(LESSTHANSIGN$1);
	    tokenizer.eat(APOSTROPHE$1);

	    name = scanWord(tokenizer);

	    tokenizer.eat(APOSTROPHE$1);
	    tokenizer.eat(GREATERTHANSIGN$1);

	    return maybeMultiplied(tokenizer, {
	        type: 'Property',
	        name: name
	    });
	}

	function readType(tokenizer) {
	    var name;

	    tokenizer.eat(LESSTHANSIGN$1);
	    name = scanWord(tokenizer);

	    if (tokenizer.charCode() === LEFTPARENTHESIS$1 &&
	        tokenizer.nextCharCode() === RIGHTPARENTHESIS$1) {
	        tokenizer.pos += 2;
	        name += '()';
	    }

	    tokenizer.eat(GREATERTHANSIGN$1);

	    return maybeMultiplied(tokenizer, {
	        type: 'Type',
	        name: name
	    });
	}

	function readKeywordOrFunction(tokenizer) {
	    var name;

	    name = scanWord(tokenizer);

	    if (tokenizer.charCode() === LEFTPARENTHESIS$1) {
	        tokenizer.pos++;

	        return {
	            type: 'Function',
	            name: name
	        };
	    }

	    return maybeMultiplied(tokenizer, {
	        type: 'Keyword',
	        name: name
	    });
	}

	function regroupTerms(terms, combinators) {
	    function createGroup(terms, combinator) {
	        return {
	            type: 'Group',
	            terms: terms,
	            combinator: combinator,
	            disallowEmpty: false,
	            explicit: false
	        };
	    }

	    combinators = Object.keys(combinators).sort(function(a, b) {
	        return COMBINATOR_PRECEDENCE[a] - COMBINATOR_PRECEDENCE[b];
	    });

	    while (combinators.length > 0) {
	        var combinator = combinators.shift();
	        for (var i = 0, subgroupStart = 0; i < terms.length; i++) {
	            var term = terms[i];
	            if (term.type === 'Combinator') {
	                if (term.value === combinator) {
	                    if (subgroupStart === -1) {
	                        subgroupStart = i - 1;
	                    }
	                    terms.splice(i, 1);
	                    i--;
	                } else {
	                    if (subgroupStart !== -1 && i - subgroupStart > 1) {
	                        terms.splice(
	                            subgroupStart,
	                            i - subgroupStart,
	                            createGroup(terms.slice(subgroupStart, i), combinator)
	                        );
	                        i = subgroupStart + 1;
	                    }
	                    subgroupStart = -1;
	                }
	            }
	        }

	        if (subgroupStart !== -1 && combinators.length) {
	            terms.splice(
	                subgroupStart,
	                i - subgroupStart,
	                createGroup(terms.slice(subgroupStart, i), combinator)
	            );
	        }
	    }

	    return combinator;
	}

	function readImplicitGroup(tokenizer) {
	    var terms = [];
	    var combinators = {};
	    var token;
	    var prevToken = null;
	    var prevTokenPos = tokenizer.pos;

	    while (token = peek(tokenizer)) {
	        if (token.type !== 'Spaces') {
	            if (token.type === 'Combinator') {
	                // check for combinator in group beginning and double combinator sequence
	                if (prevToken === null || prevToken.type === 'Combinator') {
	                    tokenizer.pos = prevTokenPos;
	                    tokenizer.error('Unexpected combinator');
	                }

	                combinators[token.value] = true;
	            } else if (prevToken !== null && prevToken.type !== 'Combinator') {
	                combinators[' '] = true;  // a b
	                terms.push({
	                    type: 'Combinator',
	                    value: ' '
	                });
	            }

	            terms.push(token);
	            prevToken = token;
	            prevTokenPos = tokenizer.pos;
	        }
	    }

	    // check for combinator in group ending
	    if (prevToken !== null && prevToken.type === 'Combinator') {
	        tokenizer.pos -= prevTokenPos;
	        tokenizer.error('Unexpected combinator');
	    }

	    return {
	        type: 'Group',
	        terms: terms,
	        combinator: regroupTerms(terms, combinators) || ' ',
	        disallowEmpty: false,
	        explicit: false
	    };
	}

	function readGroup(tokenizer) {
	    var result;

	    tokenizer.eat(LEFTSQUAREBRACKET$1);
	    result = readImplicitGroup(tokenizer);
	    tokenizer.eat(RIGHTSQUAREBRACKET$1);

	    result.explicit = true;

	    if (tokenizer.charCode() === EXCLAMATIONMARK$1) {
	        tokenizer.pos++;
	        result.disallowEmpty = true;
	    }

	    return result;
	}

	function peek(tokenizer) {
	    var code = tokenizer.charCode();

	    if (code < 128 && NAME_CHAR[code] === 1) {
	        return readKeywordOrFunction(tokenizer);
	    }

	    switch (code) {
	        case RIGHTSQUAREBRACKET$1:
	            // don't eat, stop scan a group
	            break;

	        case LEFTSQUAREBRACKET$1:
	            return maybeMultiplied(tokenizer, readGroup(tokenizer));

	        case LESSTHANSIGN$1:
	            return tokenizer.nextCharCode() === APOSTROPHE$1
	                ? readProperty(tokenizer)
	                : readType(tokenizer);

	        case VERTICALLINE:
	            return {
	                type: 'Combinator',
	                value: tokenizer.substringToPos(
	                    tokenizer.nextCharCode() === VERTICALLINE
	                        ? tokenizer.pos + 2
	                        : tokenizer.pos + 1
	                )
	            };

	        case AMPERSAND:
	            tokenizer.pos++;
	            tokenizer.eat(AMPERSAND);

	            return {
	                type: 'Combinator',
	                value: '&&'
	            };

	        case COMMA:
	            tokenizer.pos++;
	            return {
	                type: 'Comma'
	            };

	        case APOSTROPHE$1:
	            return maybeMultiplied(tokenizer, {
	                type: 'String',
	                value: scanString(tokenizer)
	            });

	        case SPACE$3:
	        case TAB$3:
	        case N$4:
	        case R$4:
	        case F$4:
	            return {
	                type: 'Spaces',
	                value: scanSpaces(tokenizer)
	            };

	        case COMMERCIALAT$1:
	            code = tokenizer.nextCharCode();

	            if (code < 128 && NAME_CHAR[code] === 1) {
	                tokenizer.pos++;
	                return {
	                    type: 'AtKeyword',
	                    name: scanWord(tokenizer)
	                };
	            }

	            return maybeToken(tokenizer);

	        case ASTERISK:
	        case PLUSSIGN$3:
	        case QUESTIONMARK:
	        case NUMBERSIGN$1:
	        case EXCLAMATIONMARK$1:
	            // prohibited tokens (used as a multiplier start)
	            break;

	        case LEFTCURLYBRACKET$1:
	            // LEFTCURLYBRACKET is allowed since mdn/data uses it w/o quoting
	            // check next char isn't a number, because it's likely a disjoined multiplier
	            code = tokenizer.nextCharCode();

	            if (code < 48 || code > 57) {
	                return maybeToken(tokenizer);
	            }

	            break;

	        default:
	            return maybeToken(tokenizer);
	    }
	}

	function parse(str) {
	    var tokenizer = new tokenizer$1(str);
	    var result = readImplicitGroup(tokenizer);

	    if (tokenizer.pos !== str.length) {
	        tokenizer.error('Unexpected input');
	    }

	    // reduce redundant groups with single group term
	    if (result.terms.length === 1 && result.terms[0].type === 'Group') {
	        result = result.terms[0];
	    }

	    return result;
	}

	// warm up parse to elimitate code branches that never execute
	// fix soft deoptimizations (insufficient type feedback)
	parse('[a&&<b>#|<\'c\'>*||e() f{2} /,(% g#{1,2} h{2,})]!');

	var parse_1 = parse;

	var noop$2 = function() {};

	function ensureFunction(value) {
	    return typeof value === 'function' ? value : noop$2;
	}

	var walk$1 = function(node, options, context) {
	    function walk(node) {
	        enter.call(context, node);

	        switch (node.type) {
	            case 'Group':
	                node.terms.forEach(walk);
	                break;

	            case 'Multiplier':
	                walk(node.term);
	                break;

	            case 'Type':
	            case 'Property':
	            case 'Keyword':
	            case 'AtKeyword':
	            case 'Function':
	            case 'String':
	            case 'Token':
	            case 'Comma':
	                break;

	            default:
	                throw new Error('Unknown type: ' + node.type);
	        }

	        leave.call(context, node);
	    }

	    var enter = noop$2;
	    var leave = noop$2;

	    if (typeof options === 'function') {
	        enter = options;
	    } else if (options) {
	        enter = ensureFunction(options.enter);
	        leave = ensureFunction(options.leave);
	    }

	    if (enter === noop$2 && leave === noop$2) {
	        throw new Error('Neither `enter` nor `leave` walker handler is set or both aren\'t a function');
	    }

	    walk(node, context);
	};

	var astToTokens = {
	    decorator: function(handlers) {
	        var curNode = null;
	        var prev = null;
	        var tokens = [];

	        return {
	            children: handlers.children,
	            node: function(node) {
	                var tmp = curNode;
	                curNode = node;
	                handlers.node.call(this, node);
	                curNode = tmp;
	            },
	            chunk: function(chunk) {
	                if (tokens.length > 0) {
	                    switch (curNode.type) {
	                        case 'Dimension':
	                        case 'HexColor':
	                        case 'IdSelector':
	                        case 'Percentage':
	                            if (prev.node === curNode) {
	                                prev.value += chunk;
	                                return;
	                            }
	                            break;

	                        case 'Function':
	                        case 'PseudoClassSelector':
	                        case 'PseudoElementSelector':
	                        case 'Url':
	                            if (chunk === '(') {
	                                prev.value += chunk;
	                                return;
	                            }
	                            break;

	                        case 'Atrule':
	                            if (prev.node === curNode && prev.value === '@') {
	                                prev.value += chunk;
	                                return;
	                            }
	                            break;
	                    }
	                }

	                tokens.push(prev = {
	                    value: chunk,
	                    node: curNode
	                });
	            },
	            result: function() {
	                return tokens;
	            }
	        };
	    }
	};

	var MATCH = { type: 'Match' };
	var MISMATCH = { type: 'Mismatch' };
	var DISALLOW_EMPTY = { type: 'DisallowEmpty' };
	var LEFTPARENTHESIS$2 = 40;  // (
	var RIGHTPARENTHESIS$2 = 41; // )

	function createCondition(match, thenBranch, elseBranch) {
	    // reduce node count
	    if (thenBranch === MATCH && elseBranch === MISMATCH) {
	        return match;
	    }

	    if (match === MATCH && thenBranch === MATCH && elseBranch === MATCH) {
	        return match;
	    }

	    if (match.type === 'If' && match.else === MISMATCH && thenBranch === MATCH) {
	        thenBranch = match.then;
	        match = match.match;
	    }

	    return {
	        type: 'If',
	        match: match,
	        then: thenBranch,
	        else: elseBranch
	    };
	}

	function isFunctionType(name) {
	    return (
	        name.length > 2 &&
	        name.charCodeAt(name.length - 2) === LEFTPARENTHESIS$2 &&
	        name.charCodeAt(name.length - 1) === RIGHTPARENTHESIS$2
	    );
	}

	function isEnumCapatible(term) {
	    return (
	        term.type === 'Keyword' ||
	        term.type === 'AtKeyword' ||
	        term.type === 'Function' ||
	        term.type === 'Type' && isFunctionType(term.name)
	    );
	}

	function buildGroupMatchGraph(combinator, terms, atLeastOneTermMatched) {
	    switch (combinator) {
	        case ' ':
	            // Juxtaposing components means that all of them must occur, in the given order.
	            //
	            // a b c
	            // =
	            // match a
	            //   then match b
	            //     then match c
	            //       then MATCH
	            //       else MISMATCH
	            //     else MISMATCH
	            //   else MISMATCH
	            var result = MATCH;

	            for (var i = terms.length - 1; i >= 0; i--) {
	                var term = terms[i];

	                result = createCondition(
	                    term,
	                    result,
	                    MISMATCH
	                );
	            }
	            return result;

	        case '|':
	            // A bar (|) separates two or more alternatives: exactly one of them must occur.
	            //
	            // a | b | c
	            // =
	            // match a
	            //   then MATCH
	            //   else match b
	            //     then MATCH
	            //     else match c
	            //       then MATCH
	            //       else MISMATCH

	            var result = MISMATCH;
	            var map = null;

	            for (var i = terms.length - 1; i >= 0; i--) {
	                var term = terms[i];

	                // reduce sequence of keywords into a Enum
	                if (isEnumCapatible(term)) {
	                    if (map === null && i > 0 && isEnumCapatible(terms[i - 1])) {
	                        map = Object.create(null);
	                        result = createCondition(
	                            {
	                                type: 'Enum',
	                                map: map
	                            },
	                            MATCH,
	                            result
	                        );
	                    }

	                    if (map !== null) {
	                        var key = (isFunctionType(term.name) ? term.name.slice(0, -1) : term.name).toLowerCase();
	                        if (key in map === false) {
	                            map[key] = term;
	                            continue;
	                        }
	                    }
	                }

	                map = null;

	                // create a new conditonal node
	                result = createCondition(
	                    term,
	                    MATCH,
	                    result
	                );
	            }
	            return result;

	        case '&&':
	            // A double ampersand (&&) separates two or more components,
	            // all of which must occur, in any order.

	            // Use MatchOnce for groups with a large number of terms,
	            // since &&-groups produces at least N!-node trees
	            if (terms.length > 5) {
	                return {
	                    type: 'MatchOnce',
	                    terms: terms,
	                    all: true
	                };
	            }

	            // Use a combination tree for groups with small number of terms
	            //
	            // a && b && c
	            // =
	            // match a
	            //   then [b && c]
	            //   else match b
	            //     then [a && c]
	            //     else match c
	            //       then [a && b]
	            //       else MISMATCH
	            //
	            // a && b
	            // =
	            // match a
	            //   then match b
	            //     then MATCH
	            //     else MISMATCH
	            //   else match b
	            //     then match a
	            //       then MATCH
	            //       else MISMATCH
	            //     else MISMATCH
	            var result = MISMATCH;

	            for (var i = terms.length - 1; i >= 0; i--) {
	                var term = terms[i];
	                var thenClause;

	                if (terms.length > 1) {
	                    thenClause = buildGroupMatchGraph(
	                        combinator,
	                        terms.filter(function(newGroupTerm) {
	                            return newGroupTerm !== term;
	                        }),
	                        false
	                    );
	                } else {
	                    thenClause = MATCH;
	                }

	                result = createCondition(
	                    term,
	                    thenClause,
	                    result
	                );
	            }
	            return result;

	        case '||':
	            // A double bar (||) separates two or more options:
	            // one or more of them must occur, in any order.

	            // Use MatchOnce for groups with a large number of terms,
	            // since ||-groups produces at least N!-node trees
	            if (terms.length > 5) {
	                return {
	                    type: 'MatchOnce',
	                    terms: terms,
	                    all: false
	                };            }

	            // Use a combination tree for groups with small number of terms
	            //
	            // a || b || c
	            // =
	            // match a
	            //   then [b || c]
	            //   else match b
	            //     then [a || c]
	            //     else match c
	            //       then [a || b]
	            //       else MISMATCH
	            //
	            // a || b
	            // =
	            // match a
	            //   then match b
	            //     then MATCH
	            //     else MATCH
	            //   else match b
	            //     then match a
	            //       then MATCH
	            //       else MATCH
	            //     else MISMATCH
	            var result = atLeastOneTermMatched ? MATCH : MISMATCH;

	            for (var i = terms.length - 1; i >= 0; i--) {
	                var term = terms[i];
	                var thenClause;

	                if (terms.length > 1) {
	                    thenClause = buildGroupMatchGraph(
	                        combinator,
	                        terms.filter(function(newGroupTerm) {
	                            return newGroupTerm !== term;
	                        }),
	                        true
	                    );
	                } else {
	                    thenClause = MATCH;
	                }

	                result = createCondition(
	                    term,
	                    thenClause,
	                    result
	                );
	            }
	            return result;
	    }
	}

	function buildMultiplierMatchGraph(node) {
	    var result = MATCH;
	    var matchTerm = buildMatchGraph(node.term);

	    if (node.max === 0) {
	        // disable repeating of empty match to prevent infinite loop
	        matchTerm = createCondition(
	            matchTerm,
	            DISALLOW_EMPTY,
	            MISMATCH
	        );

	        // an occurrence count is not limited, make a cycle;
	        // to collect more terms on each following matching mismatch
	        result = createCondition(
	            matchTerm,
	            null, // will be a loop
	            MISMATCH
	        );

	        result.then = createCondition(
	            MATCH,
	            MATCH,
	            result // make a loop
	        );

	        if (node.comma) {
	            result.then.else = createCondition(
	                { type: 'Comma', syntax: node },
	                result,
	                MISMATCH
	            );
	        }
	    } else {
	        // create a match node chain for [min .. max] interval with optional matches
	        for (var i = node.min || 1; i <= node.max; i++) {
	            if (node.comma && result !== MATCH) {
	                result = createCondition(
	                    { type: 'Comma', syntax: node },
	                    result,
	                    MISMATCH
	                );
	            }

	            result = createCondition(
	                matchTerm,
	                createCondition(
	                    MATCH,
	                    MATCH,
	                    result
	                ),
	                MISMATCH
	            );
	        }
	    }

	    if (node.min === 0) {
	        // allow zero match
	        result = createCondition(
	            MATCH,
	            MATCH,
	            result
	        );
	    } else {
	        // create a match node chain to collect [0 ... min - 1] required matches
	        for (var i = 0; i < node.min - 1; i++) {
	            if (node.comma && result !== MATCH) {
	                result = createCondition(
	                    { type: 'Comma', syntax: node },
	                    result,
	                    MISMATCH
	                );
	            }

	            result = createCondition(
	                matchTerm,
	                result,
	                MISMATCH
	            );
	        }
	    }

	    return result;
	}

	function buildMatchGraph(node) {
	    if (typeof node === 'function') {
	        return {
	            type: 'Generic',
	            fn: node
	        };
	    }

	    switch (node.type) {
	        case 'Group':
	            var result = buildGroupMatchGraph(
	                node.combinator,
	                node.terms.map(buildMatchGraph),
	                false
	            );

	            if (node.disallowEmpty) {
	                result = createCondition(
	                    result,
	                    DISALLOW_EMPTY,
	                    MISMATCH
	                );
	            }

	            return result;

	        case 'Multiplier':
	            return buildMultiplierMatchGraph(node);

	        case 'Type':
	        case 'Property':
	            return {
	                type: node.type,
	                name: node.name,
	                syntax: node
	            };

	        case 'Keyword':
	            return {
	                type: node.type,
	                name: node.name.toLowerCase(),
	                syntax: node
	            };

	        case 'AtKeyword':
	            return {
	                type: node.type,
	                name: '@' + node.name.toLowerCase(),
	                syntax: node
	            };

	        case 'Function':
	            return {
	                type: node.type,
	                name: node.name.toLowerCase() + '(',
	                syntax: node
	            };

	        case 'String':
	            // convert a one char length String to a Token
	            if (node.value.length === 3) {
	                return {
	                    type: 'Token',
	                    value: node.value.charAt(1),
	                    syntax: node
	                };
	            }

	            // otherwise use it as is
	            return {
	                type: node.type,
	                value: node.value,
	                syntax: node
	            };

	        case 'Token':
	            return {
	                type: node.type,
	                value: node.value,
	                syntax: node
	            };

	        case 'Comma':
	            return {
	                type: node.type,
	                syntax: node
	            };

	        default:
	            throw new Error('Unknown node type:', node.type);
	    }
	}

	var matchGraph = {
	    MATCH: MATCH,
	    MISMATCH: MISMATCH,
	    DISALLOW_EMPTY: DISALLOW_EMPTY,
	    buildMatchGraph: function(syntaxTree, ref) {
	        if (typeof syntaxTree === 'string') {
	            syntaxTree = parse_1(syntaxTree);
	        }

	        return {
	            type: 'MatchGraph',
	            match: buildMatchGraph(syntaxTree),
	            syntax: ref || null,
	            source: syntaxTree
	        };
	    }
	};

	var hasOwnProperty$1 = Object.prototype.hasOwnProperty;

	var MATCH$1 = matchGraph.MATCH;
	var MISMATCH$1 = matchGraph.MISMATCH;
	var DISALLOW_EMPTY$1 = matchGraph.DISALLOW_EMPTY;

	var TOKEN = 1;
	var OPEN_SYNTAX = 2;
	var CLOSE_SYNTAX = 3;

	var EXIT_REASON_MATCH = 'Match';
	var EXIT_REASON_MISMATCH = 'Mismatch';
	var EXIT_REASON_ITERATION_LIMIT = 'Maximum iteration number exceeded (please fill an issue on https://github.com/csstree/csstree/issues)';

	var ITERATION_LIMIT = 10000;
	var totalIterationCount = 0;

	function mapList(list, fn) {
	    var result = [];

	    while (list) {
	        result.unshift(fn(list));
	        list = list.prev;
	    }

	    return result;
	}

	function isCommaContextStart(token) {
	    if (token === null) {
	        return true;
	    }

	    token = token.value.charAt(token.value.length - 1);

	    return (
	        token === ',' ||
	        token === '(' ||
	        token === '[' ||
	        token === '/'
	    );
	}

	function isCommaContextEnd(token) {
	    if (token === null) {
	        return true;
	    }

	    token = token.value.charAt(0);

	    return (
	        token === ')' ||
	        token === ']' ||
	        token === '/'
	    );
	}

	function internalMatch(tokens, syntax, syntaxes) {
	    function moveToNextToken() {
	        do {
	            tokenCursor++;
	            token = tokenCursor < tokens.length ? tokens[tokenCursor] : null;
	        } while (token !== null && !/\S/.test(token.value));
	    }

	    function getNextToken(offset) {
	        var nextIndex = tokenCursor + offset;

	        return nextIndex < tokens.length ? tokens[nextIndex] : null;
	    }

	    function pushThenStack(nextSyntax) {
	        thenStack = {
	            nextSyntax: nextSyntax,
	            matchStack: matchStack,
	            syntaxStack: syntaxStack,
	            prev: thenStack
	        };
	    }

	    function pushElseStack(nextSyntax) {
	        elseStack = {
	            nextSyntax: nextSyntax,
	            matchStack: matchStack,
	            syntaxStack: syntaxStack,
	            thenStack: thenStack,
	            tokenCursor: tokenCursor,
	            token: token,
	            prev: elseStack
	        };
	    }

	    function addTokenToMatch() {
	        matchStack = {
	            type: TOKEN,
	            syntax: syntax.syntax,
	            token: token,
	            prev: matchStack
	        };

	        moveToNextToken();

	        if (tokenCursor > longestMatch) {
	            longestMatch = tokenCursor;
	        }

	        return matchStack.token;
	    }

	    function openSyntax() {
	        syntaxStack = {
	            syntax: syntax,
	            prev: syntaxStack
	        };

	        matchStack = {
	            type: OPEN_SYNTAX,
	            syntax: syntax.syntax,
	            token: matchStack.token,
	            prev: matchStack
	        };
	    }

	    function closeSyntax() {
	        if (matchStack.type === OPEN_SYNTAX) {
	            matchStack = matchStack.prev;
	        } else {
	            matchStack = {
	                type: CLOSE_SYNTAX,
	                syntax: syntaxStack.syntax,
	                token: matchStack.token,
	                prev: matchStack
	            };
	        }

	        syntaxStack = syntaxStack.prev;
	    }

	    var syntaxStack = null;
	    var thenStack = null;
	    var elseStack = null;

	    var iterationCount = 0;
	    var exitReason = EXIT_REASON_MATCH;

	    var matchStack = { type: 'Stub', syntax: null, token: null, tokenCursor: -1, prev: null };
	    var longestMatch = 0;
	    var tokenCursor = -1;
	    var token = null;

	    moveToNextToken();

	    while (true) {
	        // console.log('--\n',
	        //     '#' + iterationCount,
	        //     require('util').inspect({
	        //         match: mapList(matchStack, x => x.type === TOKEN ? x.token && x.token.value : x.syntax ? x.type + '!' + x.syntax.name : null),
	        //         elseStack: mapList(elseStack, x => x.id),
	        //         thenStack: mapList(thenStack, x => x.id),
	        //         token: token && token.value,
	        //         tokenCursor,
	        //         syntax
	        //     }, { depth: null })
	        // );

	        // prevent infinite loop
	        if (++iterationCount === ITERATION_LIMIT) {
	            console.warn('[csstree-match] BREAK after ' + ITERATION_LIMIT + ' iterations');
	            exitReason = EXIT_REASON_ITERATION_LIMIT;
	            break;
	        }

	        if (syntax === MATCH$1) {
	            if (thenStack === null) {
	                // turn to MISMATCH when some tokens left unmatched
	                if (token !== null) {
	                    // doesn't mismatch if just one token left and it's an IE hack
	                    if (tokenCursor !== tokens.length - 1 || (token.value !== '\\0' && token.value !== '\\9')) {
	                        syntax = MISMATCH$1;
	                        continue;
	                    }
	                }

	                // break the main loop, return a result - MATCH
	                exitReason = EXIT_REASON_MATCH;
	                break;
	            }

	            // go to next syntax (`then` branch)
	            syntax = thenStack.nextSyntax;

	            // check match is not empty
	            if (syntax === DISALLOW_EMPTY$1) {
	                if (thenStack.matchStack.token === matchStack.token) {
	                    syntax = MISMATCH$1;
	                    continue;
	                } else {
	                    syntax = MATCH$1;
	                }
	            }

	            // close syntax if needed
	            while (syntaxStack !== null && thenStack.syntaxStack !== syntaxStack) {
	                closeSyntax();
	            }

	            // pop stack
	            thenStack = thenStack.prev;
	            continue;
	        }

	        if (syntax === MISMATCH$1) {
	            if (elseStack === null) {
	                // break the main loop, return a result - MISMATCH
	                exitReason = EXIT_REASON_MISMATCH;
	                break;
	            }

	            // go to next syntax (`else` branch)
	            syntax = elseStack.nextSyntax;

	            // restore all the rest stack states
	            thenStack = elseStack.thenStack;
	            syntaxStack = elseStack.syntaxStack;
	            matchStack = elseStack.matchStack;
	            tokenCursor = elseStack.tokenCursor;
	            token = elseStack.token;

	            // pop stack
	            elseStack = elseStack.prev;
	            continue;
	        }

	        switch (syntax.type) {
	            case 'MatchGraph':
	                syntax = syntax.match;
	                break;

	            case 'If':
	                // IMPORTANT: else stack push must go first,
	                // since it stores the state of thenStack before changes
	                if (syntax.else !== MISMATCH$1) {
	                    pushElseStack(syntax.else);
	                }

	                if (syntax.then !== MATCH$1) {
	                    pushThenStack(syntax.then);
	                }

	                syntax = syntax.match;
	                break;

	            case 'MatchOnce':
	                syntax = {
	                    type: 'MatchOnceBuffer',
	                    terms: syntax.terms,
	                    all: syntax.all,
	                    matchStack: matchStack,
	                    index: 0,
	                    mask: 0
	                };
	                break;

	            case 'MatchOnceBuffer':
	                if (syntax.index === syntax.terms.length) {
	                    // if no matches during a cycle
	                    if (syntax.matchStack === matchStack) {
	                        // no matches at all or it's required all terms to be matched
	                        if (syntax.mask === 0 || syntax.all) {
	                            syntax = MISMATCH$1;
	                            break;
	                        }

	                        // a partial match is ok
	                        syntax = MATCH$1;
	                        break;
	                    } else {
	                        // start trying to match from the start
	                        syntax.index = 0;
	                        syntax.matchStack = matchStack;
	                    }
	                }

	                for (; syntax.index < syntax.terms.length; syntax.index++) {
	                    if ((syntax.mask & (1 << syntax.index)) === 0) {
	                        // IMPORTANT: else stack push must go first,
	                        // since it stores the state of thenStack before changes
	                        pushElseStack(syntax);
	                        pushThenStack({
	                            type: 'AddMatchOnce',
	                            buffer: syntax
	                        });

	                        // match
	                        syntax = syntax.terms[syntax.index++];
	                        break;
	                    }
	                }
	                break;

	            case 'AddMatchOnce':
	                syntax = syntax.buffer;

	                var newMask = syntax.mask | (1 << (syntax.index - 1));

	                // all terms are matched
	                if (newMask === (1 << syntax.terms.length) - 1) {
	                    syntax = MATCH$1;
	                    continue;
	                }

	                syntax = {
	                    type: 'MatchOnceBuffer',
	                    terms: syntax.terms,
	                    all: syntax.all,
	                    matchStack: syntax.matchStack,
	                    index: syntax.index,
	                    mask: newMask
	                };

	                break;

	            case 'Enum':
	                var name = token !== null ? token.value.toLowerCase() : '';

	                // drop \0 and \9 hack from keyword name
	                if (name.indexOf('\\') !== -1) {
	                    name = name.replace(/\\[09].*$/, '');
	                }

	                if (hasOwnProperty$1.call(syntax.map, name)) {
	                    syntax = syntax.map[name];
	                } else {
	                    syntax = MISMATCH$1;
	                }

	                break;

	            case 'Generic':
	                syntax = syntax.fn(token, addTokenToMatch, getNextToken) ? MATCH$1 : MISMATCH$1;
	                break;

	            case 'Type':
	            case 'Property':
	                openSyntax();

	                var syntaxDict = syntax.type === 'Type' ? 'types' : 'properties';

	                if (hasOwnProperty$1.call(syntaxes, syntaxDict) && syntaxes[syntaxDict][syntax.name]) {
	                    syntax = syntaxes[syntaxDict][syntax.name].match;
	                } else {
	                    syntax = undefined;
	                }

	                if (!syntax) {
	                    throw new Error(
	                        'Bad syntax reference: ' +
	                        (syntaxStack.syntax.type === 'Type'
	                            ? '<' + syntaxStack.syntax.name + '>'
	                            : '<\'' + syntaxStack.syntax.name + '\'>')
	                    );
	                }

	                break;

	            case 'Keyword':
	                var name = syntax.name;

	                if (token !== null) {
	                    var keywordName = token.value;

	                    // drop \0 and \9 hack from keyword name
	                    if (keywordName.indexOf('\\') !== -1) {
	                        keywordName = keywordName.replace(/\\[09].*$/, '');
	                    }

	                    if (keywordName.toLowerCase() === name) {
	                        addTokenToMatch();

	                        syntax = MATCH$1;
	                        break;
	                    }
	                }

	                syntax = MISMATCH$1;
	                break;

	            case 'AtKeyword':
	            case 'Function':
	                if (token !== null && token.value.toLowerCase() === syntax.name) {
	                    addTokenToMatch();

	                    syntax = MATCH$1;
	                    break;
	                }

	                syntax = MISMATCH$1;
	                break;

	            case 'Token':
	                if (token !== null && token.value === syntax.value) {
	                    addTokenToMatch();

	                    syntax = MATCH$1;
	                    break;
	                }

	                syntax = MISMATCH$1;
	                break;

	            case 'Comma':
	                if (token !== null && token.value === ',') {
	                    if (isCommaContextStart(matchStack.token)) {
	                        syntax = MISMATCH$1;
	                    } else {
	                        addTokenToMatch();
	                        syntax = isCommaContextEnd(token) ? MISMATCH$1 : MATCH$1;
	                    }
	                } else {
	                    syntax = isCommaContextStart(matchStack.token) || isCommaContextEnd(token) ? MATCH$1 : MISMATCH$1;
	                }

	                break;

	            // case 'String':
	            // TODO: strings with length other than 1 char

	            default:
	                throw new Error('Unknown node type: ' + syntax.type);
	        }
	    }

	    totalIterationCount += iterationCount;

	    if (exitReason === EXIT_REASON_MATCH) {
	        while (syntaxStack !== null) {
	            closeSyntax();
	        }
	    } else {
	        matchStack = null;
	    }

	    return {
	        tokens: tokens,
	        reason: exitReason,
	        iterations: iterationCount,
	        match: matchStack,
	        longestMatch: longestMatch
	    };
	}

	function matchAsList(tokens, matchGraph, syntaxes) {
	    var matchResult = internalMatch(tokens, matchGraph, syntaxes || {});

	    if (matchResult.match !== null) {
	        matchResult.match = mapList(matchResult.match, function(item) {
	            if (item.type === OPEN_SYNTAX || item.type === CLOSE_SYNTAX) {
	                return { type: item.type, syntax: item.syntax };
	            }

	            return {
	                syntax: item.syntax,
	                token: item.token && item.token.value,
	                node: item.token && item.token.node
	            };
	        }).slice(1);
	    }

	    return matchResult;
	}

	function matchAsTree(tokens, matchGraph, syntaxes) {
	    var matchResult = internalMatch(tokens, matchGraph, syntaxes || {});

	    if (matchResult.match === null) {
	        return matchResult;
	    }

	    var cursor = matchResult.match;
	    var host = matchResult.match = {
	        syntax: matchGraph.syntax || null,
	        match: []
	    };
	    var stack = [host];

	    // revert a list
	    var prev = null;
	    var next = null;
	    while (cursor !== null) {
	        next = cursor.prev;
	        cursor.prev = prev;
	        prev = cursor;
	        cursor = next;
	    }

	    // init the cursor to start with 2nd item since 1st is a stub item
	    cursor = prev.prev;

	    // build a tree
	    while (cursor !== null && cursor.syntax !== null) {
	        var entry = cursor;

	        switch (entry.type) {
	            case OPEN_SYNTAX:
	                host.match.push(host = {
	                    syntax: entry.syntax,
	                    match: []
	                });
	                stack.push(host);
	                break;

	            case CLOSE_SYNTAX:
	                stack.pop();
	                host = stack[stack.length - 1];
	                break;

	            default:
	                host.match.push({
	                    syntax: entry.syntax || null,
	                    token: entry.token.value,
	                    node: entry.token.node
	                });
	        }

	        cursor = cursor.prev;
	    }

	    return matchResult;
	}

	var match = {
	    matchAsList: matchAsList,
	    matchAsTree: matchAsTree,
	    getTotalIterationCount: function() {
	        return totalIterationCount;
	    }
	};

	function getTrace(node) {
	    function shouldPutToTrace(syntax) {
	        if (syntax === null) {
	            return false;
	        }

	        return (
	            syntax.type === 'Type' ||
	            syntax.type === 'Property' ||
	            syntax.type === 'Keyword'
	        );
	    }

	    function hasMatch(matchNode) {
	        if (Array.isArray(matchNode.match)) {
	            // use for-loop for better perfomance
	            for (var i = 0; i < matchNode.match.length; i++) {
	                if (hasMatch(matchNode.match[i])) {
	                    if (shouldPutToTrace(matchNode.syntax)) {
	                        result.unshift(matchNode.syntax);
	                    }

	                    return true;
	                }
	            }
	        } else if (matchNode.node === node) {
	            result = shouldPutToTrace(matchNode.syntax)
	                ? [matchNode.syntax]
	                : [];

	            return true;
	        }

	        return false;
	    }

	    var result = null;

	    if (this.matched !== null) {
	        hasMatch(this.matched);
	    }

	    return result;
	}

	function testNode(match, node, fn) {
	    var trace = getTrace.call(match, node);

	    if (trace === null) {
	        return false;
	    }

	    return trace.some(fn);
	}

	function isType(node, type) {
	    return testNode(this, node, function(matchNode) {
	        return matchNode.type === 'Type' && matchNode.name === type;
	    });
	}

	function isProperty(node, property) {
	    return testNode(this, node, function(matchNode) {
	        return matchNode.type === 'Property' && matchNode.name === property;
	    });
	}

	function isKeyword(node) {
	    return testNode(this, node, function(matchNode) {
	        return matchNode.type === 'Keyword';
	    });
	}

	var trace = {
	    getTrace: getTrace,
	    isType: isType,
	    isProperty: isProperty,
	    isKeyword: isKeyword
	};

	function getFirstMatchNode(matchNode) {
	    if ('node' in matchNode) {
	        return matchNode.node;
	    }

	    return getFirstMatchNode(matchNode.match[0]);
	}

	function getLastMatchNode(matchNode) {
	    if ('node' in matchNode) {
	        return matchNode.node;
	    }

	    return getLastMatchNode(matchNode.match[matchNode.match.length - 1]);
	}

	function matchFragments(lexer, ast, match, type, name) {
	    function findFragments(matchNode) {
	        if (matchNode.syntax !== null &&
	            matchNode.syntax.type === type &&
	            matchNode.syntax.name === name) {
	            var start = getFirstMatchNode(matchNode);
	            var end = getLastMatchNode(matchNode);

	            lexer.syntax.walk(ast, function(node, item, list$1) {
	                if (node === start) {
	                    var nodes = new list();

	                    do {
	                        nodes.appendData(item.data);

	                        if (item.data === end) {
	                            break;
	                        }

	                        item = item.next;
	                    } while (item !== null);

	                    fragments.push({
	                        parent: list$1,
	                        nodes: nodes
	                    });
	                }
	            });
	        }

	        if (Array.isArray(matchNode.match)) {
	            matchNode.match.forEach(findFragments);
	        }
	    }

	    var fragments = [];

	    if (match.matched !== null) {
	        findFragments(match.matched);
	    }

	    return fragments;
	}

	var search = {
	    matchFragments: matchFragments
	};

	var hasOwnProperty$2 = Object.prototype.hasOwnProperty;

	function isValidNumber(value) {
	    // Number.isInteger(value) && value >= 0
	    return (
	        typeof value === 'number' &&
	        isFinite(value) &&
	        Math.floor(value) === value &&
	        value >= 0
	    );
	}

	function isValidLocation(loc) {
	    return (
	        Boolean(loc) &&
	        isValidNumber(loc.offset) &&
	        isValidNumber(loc.line) &&
	        isValidNumber(loc.column)
	    );
	}

	function createNodeStructureChecker(type, fields) {
	    return function checkNode(node, warn) {
	        if (!node || node.constructor !== Object) {
	            return warn(node, 'Type of node should be an Object');
	        }

	        for (var key in node) {
	            var valid = true;

	            if (hasOwnProperty$2.call(node, key) === false) {
	                continue;
	            }

	            if (key === 'type') {
	                if (node.type !== type) {
	                    warn(node, 'Wrong node type `' + node.type + '`, expected `' + type + '`');
	                }
	            } else if (key === 'loc') {
	                if (node.loc === null) {
	                    continue;
	                } else if (node.loc && node.loc.constructor === Object) {
	                    if (typeof node.loc.source !== 'string') {
	                        key += '.source';
	                    } else if (!isValidLocation(node.loc.start)) {
	                        key += '.start';
	                    } else if (!isValidLocation(node.loc.end)) {
	                        key += '.end';
	                    } else {
	                        continue;
	                    }
	                }

	                valid = false;
	            } else if (fields.hasOwnProperty(key)) {
	                for (var i = 0, valid = false; !valid && i < fields[key].length; i++) {
	                    var fieldType = fields[key][i];

	                    switch (fieldType) {
	                        case String:
	                            valid = typeof node[key] === 'string';
	                            break;

	                        case Boolean:
	                            valid = typeof node[key] === 'boolean';
	                            break;

	                        case null:
	                            valid = node[key] === null;
	                            break;

	                        default:
	                            if (typeof fieldType === 'string') {
	                                valid = node[key] && node[key].type === fieldType;
	                            } else if (Array.isArray(fieldType)) {
	                                valid = node[key] instanceof list;
	                            }
	                    }
	                }
	            } else {
	                warn(node, 'Unknown field `' + key + '` for ' + type + ' node type');
	            }

	            if (!valid) {
	                warn(node, 'Bad value for `' + type + '.' + key + '`');
	            }
	        }

	        for (var key in fields) {
	            if (hasOwnProperty$2.call(fields, key) &&
	                hasOwnProperty$2.call(node, key) === false) {
	                warn(node, 'Field `' + type + '.' + key + '` is missed');
	            }
	        }
	    };
	}

	function processStructure(name, nodeType) {
	    var structure = nodeType.structure;
	    var fields = {
	        type: String,
	        loc: true
	    };
	    var docs = {
	        type: '"' + name + '"'
	    };

	    for (var key in structure) {
	        if (hasOwnProperty$2.call(structure, key) === false) {
	            continue;
	        }

	        var docsTypes = [];
	        var fieldTypes = fields[key] = Array.isArray(structure[key])
	            ? structure[key].slice()
	            : [structure[key]];

	        for (var i = 0; i < fieldTypes.length; i++) {
	            var fieldType = fieldTypes[i];
	            if (fieldType === String || fieldType === Boolean) {
	                docsTypes.push(fieldType.name);
	            } else if (fieldType === null) {
	                docsTypes.push('null');
	            } else if (typeof fieldType === 'string') {
	                docsTypes.push('<' + fieldType + '>');
	            } else if (Array.isArray(fieldType)) {
	                docsTypes.push('List'); // TODO: use type enum
	            } else {
	                throw new Error('Wrong value `' + fieldType + '` in `' + name + '.' + key + '` structure definition');
	            }
	        }

	        docs[key] = docsTypes.join(' | ');
	    }

	    return {
	        docs: docs,
	        check: createNodeStructureChecker(name, fields)
	    };
	}

	var structure = {
	    getStructureFromConfig: function(config) {
	        var structure = {};

	        if (config.node) {
	            for (var name in config.node) {
	                if (hasOwnProperty$2.call(config.node, name)) {
	                    var nodeType = config.node[name];

	                    if (nodeType.structure) {
	                        structure[name] = processStructure(name, nodeType);
	                    } else {
	                        throw new Error('Missed `structure` field in `' + name + '` node type definition');
	                    }
	                }
	            }
	        }

	        return structure;
	    }
	};

	var SyntaxReferenceError$1 = error$1.SyntaxReferenceError;
	var MatchError$1 = error$1.MatchError;






	var buildMatchGraph$1 = matchGraph.buildMatchGraph;
	var matchAsTree$1 = match.matchAsTree;


	var getStructureFromConfig = structure.getStructureFromConfig;
	var cssWideKeywords = buildMatchGraph$1(parse_1('inherit | initial | unset'));
	var cssWideKeywordsWithExpression = buildMatchGraph$1(parse_1('inherit | initial | unset | <expression>'));

	function dumpMapSyntax(map, syntaxAsAst) {
	    var result = {};

	    for (var name in map) {
	        if (map[name].syntax) {
	            result[name] = syntaxAsAst ? map[name].syntax : generate_1(map[name].syntax);
	        }
	    }

	    return result;
	}

	function valueHasVar(value) {
	    var hasVar = false;

	    this.syntax.walk(value, function(node) {
	        if (node.type === 'Function' && node.name.toLowerCase() === 'var') {
	            hasVar = true;
	        }
	    });

	    return hasVar;
	}

	function buildMatchResult(match, error, iterations) {
	    return {
	        matched: match,
	        iterations: iterations,
	        error: error,
	        getTrace: trace.getTrace,
	        isType: trace.isType,
	        isProperty: trace.isProperty,
	        isKeyword: trace.isKeyword
	    };
	}

	function matchSyntax(lexer, syntax, node, useCommon) {
	    if (!node) {
	        return buildMatchResult(null, new Error('Node is undefined'));
	    }

	    if (valueHasVar.call(lexer, node)) {
	        return buildMatchResult(null, new Error('Matching for a tree with var() is not supported'));
	    }

	    var tokens = lexer.syntax.generate(node, astToTokens);
	    var result;

	    if (useCommon) {
	        result = matchAsTree$1(tokens, lexer.valueCommonSyntax, lexer);
	    }

	    if (!useCommon || !result.match) {
	        result = matchAsTree$1(tokens, syntax.match, lexer);
	        if (!result.match) {
	            return buildMatchResult(
	                null,
	                new MatchError$1(result.reason, lexer, syntax.syntax, node, result),
	                result.iterations
	            );
	        }
	    }

	    return buildMatchResult(result.match, null, result.iterations);
	}

	var Lexer = function(config, syntax, structure) {
	    this.valueCommonSyntax = cssWideKeywords;
	    this.syntax = syntax;
	    this.generic = false;
	    this.properties = {};
	    this.types = {};
	    this.structure = structure || getStructureFromConfig(config);

	    if (config) {
	        if (config.generic) {
	            this.generic = true;
	            for (var name in generic) {
	                this.addType_(name, generic[name]);
	            }
	        }

	        if (config.types) {
	            for (var name in config.types) {
	                this.addType_(name, config.types[name]);
	            }
	        }

	        if (config.properties) {
	            for (var name in config.properties) {
	                this.addProperty_(name, config.properties[name]);
	            }
	        }
	    }
	};

	Lexer.prototype = {
	    structure: {},
	    checkStructure: function(ast) {
	        function collectWarning(node, message) {
	            warns.push({
	                node: node,
	                message: message
	            });
	        }

	        var structure = this.structure;
	        var warns = [];

	        this.syntax.walk(ast, function(node) {
	            if (structure.hasOwnProperty(node.type)) {
	                structure[node.type].check(node, collectWarning);
	            } else {
	                collectWarning(node, 'Unknown node type `' + node.type + '`');
	            }
	        });

	        return warns.length ? warns : false;
	    },

	    createDescriptor: function(syntax, type, name) {
	        var ref = {
	            type: type,
	            name: name
	        };
	        var descriptor = {
	            type: type,
	            name: name,
	            syntax: null,
	            match: null
	        };

	        if (typeof syntax === 'function') {
	            descriptor.match = buildMatchGraph$1(syntax, ref);
	        } else {
	            if (typeof syntax === 'string') {
	                // lazy parsing on first access
	                Object.defineProperty(descriptor, 'syntax', {
	                    get: function() {
	                        Object.defineProperty(descriptor, 'syntax', {
	                            value: parse_1(syntax)
	                        });

	                        return descriptor.syntax;
	                    }
	                });
	            } else {
	                descriptor.syntax = syntax;
	            }

	            Object.defineProperty(descriptor, 'match', {
	                get: function() {
	                    Object.defineProperty(descriptor, 'match', {
	                        value: buildMatchGraph$1(descriptor.syntax, ref)
	                    });

	                    return descriptor.match;
	                }
	            });
	        }

	        return descriptor;
	    },
	    addProperty_: function(name, syntax) {
	        this.properties[name] = this.createDescriptor(syntax, 'Property', name);
	    },
	    addType_: function(name, syntax) {
	        this.types[name] = this.createDescriptor(syntax, 'Type', name);

	        if (syntax === generic.expression) {
	            this.valueCommonSyntax = cssWideKeywordsWithExpression;
	        }
	    },

	    matchDeclaration: function(node) {
	        if (node.type !== 'Declaration') {
	            return buildMatchResult(null, new Error('Not a Declaration node'));
	        }

	        return this.matchProperty(node.property, node.value);
	    },
	    matchProperty: function(propertyName, value) {
	        var property = names.property(propertyName);

	        // don't match syntax for a custom property
	        if (property.custom) {
	            return buildMatchResult(null, new Error('Lexer matching doesn\'t applicable for custom properties'));
	        }

	        var propertySyntax = property.vendor
	            ? this.getProperty(property.name) || this.getProperty(property.basename)
	            : this.getProperty(property.name);

	        if (!propertySyntax) {
	            return buildMatchResult(null, new SyntaxReferenceError$1('Unknown property', propertyName));
	        }

	        return matchSyntax(this, propertySyntax, value, true);
	    },
	    matchType: function(typeName, value) {
	        var typeSyntax = this.getType(typeName);

	        if (!typeSyntax) {
	            return buildMatchResult(null, new SyntaxReferenceError$1('Unknown type', typeName));
	        }

	        return matchSyntax(this, typeSyntax, value, false);
	    },
	    match: function(syntax, value) {
	        if (!syntax || !syntax.type) {
	            return buildMatchResult(null, new SyntaxReferenceError$1('Bad syntax'));
	        }

	        if (!syntax.match) {
	            syntax = this.createDescriptor(syntax);
	        }

	        return matchSyntax(this, syntax, value, false);
	    },

	    findValueFragments: function(propertyName, value, type, name) {
	        return search.matchFragments(this, value, this.matchProperty(propertyName, value), type, name);
	    },
	    findDeclarationValueFragments: function(declaration, type, name) {
	        return search.matchFragments(this, declaration.value, this.matchDeclaration(declaration), type, name);
	    },
	    findAllFragments: function(ast, type, name) {
	        var result = [];

	        this.syntax.walk(ast, {
	            visit: 'Declaration',
	            enter: function(declaration) {
	                result.push.apply(result, this.findDeclarationValueFragments(declaration, type, name));
	            }.bind(this)
	        });

	        return result;
	    },

	    getProperty: function(name) {
	        return this.properties.hasOwnProperty(name) ? this.properties[name] : null;
	    },
	    getType: function(name) {
	        return this.types.hasOwnProperty(name) ? this.types[name] : null;
	    },

	    validate: function() {
	        function validate(syntax, name, broken, descriptor) {
	            if (broken.hasOwnProperty(name)) {
	                return broken[name];
	            }

	            broken[name] = false;
	            if (descriptor.syntax !== null) {
	                walk$1(descriptor.syntax, function(node) {
	                    if (node.type !== 'Type' && node.type !== 'Property') {
	                        return;
	                    }

	                    var map = node.type === 'Type' ? syntax.types : syntax.properties;
	                    var brokenMap = node.type === 'Type' ? brokenTypes : brokenProperties;

	                    if (!map.hasOwnProperty(node.name) || validate(syntax, node.name, brokenMap, map[node.name])) {
	                        broken[name] = true;
	                    }
	                }, this);
	            }
	        }

	        var brokenTypes = {};
	        var brokenProperties = {};

	        for (var key in this.types) {
	            validate(this, key, brokenTypes, this.types[key]);
	        }

	        for (var key in this.properties) {
	            validate(this, key, brokenProperties, this.properties[key]);
	        }

	        brokenTypes = Object.keys(brokenTypes).filter(function(name) {
	            return brokenTypes[name];
	        });
	        brokenProperties = Object.keys(brokenProperties).filter(function(name) {
	            return brokenProperties[name];
	        });

	        if (brokenTypes.length || brokenProperties.length) {
	            return {
	                types: brokenTypes,
	                properties: brokenProperties
	            };
	        }

	        return null;
	    },
	    dump: function(syntaxAsAst) {
	        return {
	            generic: this.generic,
	            types: dumpMapSyntax(this.types, syntaxAsAst),
	            properties: dumpMapSyntax(this.properties, syntaxAsAst)
	        };
	    },
	    toString: function() {
	        return JSON.stringify(this.dump());
	    }
	};

	var Lexer_1 = Lexer;

	var grammar = {
	    SyntaxParseError: error$2.SyntaxParseError,
	    parse: parse_1,
	    generate: generate_1,
	    walk: walk$1
	};

	var TYPE$3 = tokenizer.TYPE;
	var WHITESPACE$2 = TYPE$3.WhiteSpace;
	var COMMENT$2 = TYPE$3.Comment;

	var sequence = function readSequence(recognizer) {
	    var children = this.createList();
	    var child = null;
	    var context = {
	        recognizer: recognizer,
	        space: null,
	        ignoreWS: false,
	        ignoreWSAfter: false
	    };

	    this.scanner.skipSC();

	    while (!this.scanner.eof) {
	        switch (this.scanner.tokenType) {
	            case COMMENT$2:
	                this.scanner.next();
	                continue;

	            case WHITESPACE$2:
	                if (context.ignoreWS) {
	                    this.scanner.next();
	                } else {
	                    context.space = this.WhiteSpace();
	                }
	                continue;
	        }

	        child = recognizer.getNode.call(this, context);

	        if (child === undefined) {
	            break;
	        }

	        if (context.space !== null) {
	            children.push(context.space);
	            context.space = null;
	        }

	        children.push(child);

	        if (context.ignoreWSAfter) {
	            context.ignoreWSAfter = false;
	            context.ignoreWS = true;
	        } else {
	            context.ignoreWS = false;
	        }
	    }

	    return children;
	};

	var noop$3 = function() {};

	function createParseContext(name) {
	    return function() {
	        return this[name]();
	    };
	}

	function processConfig(config) {
	    var parserConfig = {
	        context: {},
	        scope: {},
	        atrule: {},
	        pseudo: {}
	    };

	    if (config.parseContext) {
	        for (var name in config.parseContext) {
	            switch (typeof config.parseContext[name]) {
	                case 'function':
	                    parserConfig.context[name] = config.parseContext[name];
	                    break;

	                case 'string':
	                    parserConfig.context[name] = createParseContext(config.parseContext[name]);
	                    break;
	            }
	        }
	    }

	    if (config.scope) {
	        for (var name in config.scope) {
	            parserConfig.scope[name] = config.scope[name];
	        }
	    }

	    if (config.atrule) {
	        for (var name in config.atrule) {
	            var atrule = config.atrule[name];

	            if (atrule.parse) {
	                parserConfig.atrule[name] = atrule.parse;
	            }
	        }
	    }

	    if (config.pseudo) {
	        for (var name in config.pseudo) {
	            var pseudo = config.pseudo[name];

	            if (pseudo.parse) {
	                parserConfig.pseudo[name] = pseudo.parse;
	            }
	        }
	    }

	    if (config.node) {
	        for (var name in config.node) {
	            parserConfig[name] = config.node[name].parse;
	        }
	    }

	    return parserConfig;
	}

	var create$1 = function createParser(config) {
	    var parser = {
	        scanner: new tokenizer(),
	        filename: '<unknown>',
	        needPositions: false,
	        onParseError: noop$3,
	        onParseErrorThrow: false,
	        parseAtrulePrelude: true,
	        parseRulePrelude: true,
	        parseValue: true,
	        parseCustomProperty: false,

	        readSequence: sequence,

	        createList: function() {
	            return new list();
	        },
	        createSingleNodeList: function(node) {
	            return new list().appendData(node);
	        },
	        getFirstListNode: function(list) {
	            return list && list.first();
	        },
	        getLastListNode: function(list) {
	            return list.last();
	        },

	        parseWithFallback: function(consumer, fallback) {
	            var startToken = this.scanner.currentToken;

	            try {
	                return consumer.call(this);
	            } catch (e) {
	                if (this.onParseErrorThrow) {
	                    throw e;
	                }

	                var fallbackNode = fallback.call(this, startToken);

	                this.onParseErrorThrow = true;
	                this.onParseError(e, fallbackNode);
	                this.onParseErrorThrow = false;

	                return fallbackNode;
	            }
	        },

	        getLocation: function(start, end) {
	            if (this.needPositions) {
	                return this.scanner.getLocationRange(
	                    start,
	                    end,
	                    this.filename
	                );
	            }

	            return null;
	        },
	        getLocationFromList: function(list) {
	            if (this.needPositions) {
	                var head = this.getFirstListNode(list);
	                var tail = this.getLastListNode(list);
	                return this.scanner.getLocationRange(
	                    head !== null ? head.loc.start.offset - this.scanner.startOffset : this.scanner.tokenStart,
	                    tail !== null ? tail.loc.end.offset - this.scanner.startOffset : this.scanner.tokenStart,
	                    this.filename
	                );
	            }

	            return null;
	        }
	    };

	    config = processConfig(config || {});
	    for (var key in config) {
	        parser[key] = config[key];
	    }

	    return function(source, options) {
	        options = options || {};

	        var context = options.context || 'default';
	        var ast;

	        parser.scanner.setSource(source, options.offset, options.line, options.column);
	        parser.filename = options.filename || '<unknown>';
	        parser.needPositions = Boolean(options.positions);
	        parser.onParseError = typeof options.onParseError === 'function' ? options.onParseError : noop$3;
	        parser.onParseErrorThrow = false;
	        parser.parseAtrulePrelude = 'parseAtrulePrelude' in options ? Boolean(options.parseAtrulePrelude) : true;
	        parser.parseRulePrelude = 'parseRulePrelude' in options ? Boolean(options.parseRulePrelude) : true;
	        parser.parseValue = 'parseValue' in options ? Boolean(options.parseValue) : true;
	        parser.parseCustomProperty = 'parseCustomProperty' in options ? Boolean(options.parseCustomProperty) : false;

	        if (!parser.context.hasOwnProperty(context)) {
	            throw new Error('Unknown context `' + context + '`');
	        }

	        ast = parser.context[context].call(parser, options);

	        if (!parser.scanner.eof) {
	            parser.scanner.error();
	        }

	        return ast;
	    };
	};

	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */

	var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');

	/**
	 * Encode an integer in the range of 0 to 63 to a single base 64 digit.
	 */
	var encode = function (number) {
	  if (0 <= number && number < intToCharMap.length) {
	    return intToCharMap[number];
	  }
	  throw new TypeError("Must be between 0 and 63: " + number);
	};

	/**
	 * Decode a single base 64 character code digit to an integer. Returns -1 on
	 * failure.
	 */
	var decode = function (charCode) {
	  var bigA = 65;     // 'A'
	  var bigZ = 90;     // 'Z'

	  var littleA = 97;  // 'a'
	  var littleZ = 122; // 'z'

	  var zero = 48;     // '0'
	  var nine = 57;     // '9'

	  var plus = 43;     // '+'
	  var slash = 47;    // '/'

	  var littleOffset = 26;
	  var numberOffset = 52;

	  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
	  if (bigA <= charCode && charCode <= bigZ) {
	    return (charCode - bigA);
	  }

	  // 26 - 51: abcdefghijklmnopqrstuvwxyz
	  if (littleA <= charCode && charCode <= littleZ) {
	    return (charCode - littleA + littleOffset);
	  }

	  // 52 - 61: 0123456789
	  if (zero <= charCode && charCode <= nine) {
	    return (charCode - zero + numberOffset);
	  }

	  // 62: +
	  if (charCode == plus) {
	    return 62;
	  }

	  // 63: /
	  if (charCode == slash) {
	    return 63;
	  }

	  // Invalid base64 digit.
	  return -1;
	};

	var base64 = {
		encode: encode,
		decode: decode
	};

	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 *
	 * Based on the Base 64 VLQ implementation in Closure Compiler:
	 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
	 *
	 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
	 * Redistribution and use in source and binary forms, with or without
	 * modification, are permitted provided that the following conditions are
	 * met:
	 *
	 *  * Redistributions of source code must retain the above copyright
	 *    notice, this list of conditions and the following disclaimer.
	 *  * Redistributions in binary form must reproduce the above
	 *    copyright notice, this list of conditions and the following
	 *    disclaimer in the documentation and/or other materials provided
	 *    with the distribution.
	 *  * Neither the name of Google Inc. nor the names of its
	 *    contributors may be used to endorse or promote products derived
	 *    from this software without specific prior written permission.
	 *
	 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	 */



	// A single base 64 digit can contain 6 bits of data. For the base 64 variable
	// length quantities we use in the source map spec, the first bit is the sign,
	// the next four bits are the actual value, and the 6th bit is the
	// continuation bit. The continuation bit tells us whether there are more
	// digits in this value following this digit.
	//
	//   Continuation
	//   |    Sign
	//   |    |
	//   V    V
	//   101011

	var VLQ_BASE_SHIFT = 5;

	// binary: 100000
	var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

	// binary: 011111
	var VLQ_BASE_MASK = VLQ_BASE - 1;

	// binary: 100000
	var VLQ_CONTINUATION_BIT = VLQ_BASE;

	/**
	 * Converts from a two-complement value to a value where the sign bit is
	 * placed in the least significant bit.  For example, as decimals:
	 *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
	 *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
	 */
	function toVLQSigned(aValue) {
	  return aValue < 0
	    ? ((-aValue) << 1) + 1
	    : (aValue << 1) + 0;
	}

	/**
	 * Converts to a two-complement value from a value where the sign bit is
	 * placed in the least significant bit.  For example, as decimals:
	 *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
	 *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
	 */
	function fromVLQSigned(aValue) {
	  var isNegative = (aValue & 1) === 1;
	  var shifted = aValue >> 1;
	  return isNegative
	    ? -shifted
	    : shifted;
	}

	/**
	 * Returns the base 64 VLQ encoded value.
	 */
	var encode$1 = function base64VLQ_encode(aValue) {
	  var encoded = "";
	  var digit;

	  var vlq = toVLQSigned(aValue);

	  do {
	    digit = vlq & VLQ_BASE_MASK;
	    vlq >>>= VLQ_BASE_SHIFT;
	    if (vlq > 0) {
	      // There are still more digits in this value, so we must make sure the
	      // continuation bit is marked.
	      digit |= VLQ_CONTINUATION_BIT;
	    }
	    encoded += base64.encode(digit);
	  } while (vlq > 0);

	  return encoded;
	};

	/**
	 * Decodes the next base 64 VLQ value from the given string and returns the
	 * value and the rest of the string via the out parameter.
	 */
	var decode$1 = function base64VLQ_decode(aStr, aIndex, aOutParam) {
	  var strLen = aStr.length;
	  var result = 0;
	  var shift = 0;
	  var continuation, digit;

	  do {
	    if (aIndex >= strLen) {
	      throw new Error("Expected more digits in base 64 VLQ value.");
	    }

	    digit = base64.decode(aStr.charCodeAt(aIndex++));
	    if (digit === -1) {
	      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
	    }

	    continuation = !!(digit & VLQ_CONTINUATION_BIT);
	    digit &= VLQ_BASE_MASK;
	    result = result + (digit << shift);
	    shift += VLQ_BASE_SHIFT;
	  } while (continuation);

	  aOutParam.value = fromVLQSigned(result);
	  aOutParam.rest = aIndex;
	};

	var base64Vlq = {
		encode: encode$1,
		decode: decode$1
	};

	var util = createCommonjsModule(function (module, exports) {
	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */

	/**
	 * This is a helper function for getting values from parameter/options
	 * objects.
	 *
	 * @param args The object we are extracting values from
	 * @param name The name of the property we are getting.
	 * @param defaultValue An optional value to return if the property is missing
	 * from the object. If this is not specified and the property is missing, an
	 * error will be thrown.
	 */
	function getArg(aArgs, aName, aDefaultValue) {
	  if (aName in aArgs) {
	    return aArgs[aName];
	  } else if (arguments.length === 3) {
	    return aDefaultValue;
	  } else {
	    throw new Error('"' + aName + '" is a required argument.');
	  }
	}
	exports.getArg = getArg;

	var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
	var dataUrlRegexp = /^data:.+\,.+$/;

	function urlParse(aUrl) {
	  var match = aUrl.match(urlRegexp);
	  if (!match) {
	    return null;
	  }
	  return {
	    scheme: match[1],
	    auth: match[2],
	    host: match[3],
	    port: match[4],
	    path: match[5]
	  };
	}
	exports.urlParse = urlParse;

	function urlGenerate(aParsedUrl) {
	  var url = '';
	  if (aParsedUrl.scheme) {
	    url += aParsedUrl.scheme + ':';
	  }
	  url += '//';
	  if (aParsedUrl.auth) {
	    url += aParsedUrl.auth + '@';
	  }
	  if (aParsedUrl.host) {
	    url += aParsedUrl.host;
	  }
	  if (aParsedUrl.port) {
	    url += ":" + aParsedUrl.port;
	  }
	  if (aParsedUrl.path) {
	    url += aParsedUrl.path;
	  }
	  return url;
	}
	exports.urlGenerate = urlGenerate;

	/**
	 * Normalizes a path, or the path portion of a URL:
	 *
	 * - Replaces consecutive slashes with one slash.
	 * - Removes unnecessary '.' parts.
	 * - Removes unnecessary '<dir>/..' parts.
	 *
	 * Based on code in the Node.js 'path' core module.
	 *
	 * @param aPath The path or url to normalize.
	 */
	function normalize(aPath) {
	  var path = aPath;
	  var url = urlParse(aPath);
	  if (url) {
	    if (!url.path) {
	      return aPath;
	    }
	    path = url.path;
	  }
	  var isAbsolute = exports.isAbsolute(path);

	  var parts = path.split(/\/+/);
	  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
	    part = parts[i];
	    if (part === '.') {
	      parts.splice(i, 1);
	    } else if (part === '..') {
	      up++;
	    } else if (up > 0) {
	      if (part === '') {
	        // The first part is blank if the path is absolute. Trying to go
	        // above the root is a no-op. Therefore we can remove all '..' parts
	        // directly after the root.
	        parts.splice(i + 1, up);
	        up = 0;
	      } else {
	        parts.splice(i, 2);
	        up--;
	      }
	    }
	  }
	  path = parts.join('/');

	  if (path === '') {
	    path = isAbsolute ? '/' : '.';
	  }

	  if (url) {
	    url.path = path;
	    return urlGenerate(url);
	  }
	  return path;
	}
	exports.normalize = normalize;

	/**
	 * Joins two paths/URLs.
	 *
	 * @param aRoot The root path or URL.
	 * @param aPath The path or URL to be joined with the root.
	 *
	 * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
	 *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
	 *   first.
	 * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
	 *   is updated with the result and aRoot is returned. Otherwise the result
	 *   is returned.
	 *   - If aPath is absolute, the result is aPath.
	 *   - Otherwise the two paths are joined with a slash.
	 * - Joining for example 'http://' and 'www.example.com' is also supported.
	 */
	function join(aRoot, aPath) {
	  if (aRoot === "") {
	    aRoot = ".";
	  }
	  if (aPath === "") {
	    aPath = ".";
	  }
	  var aPathUrl = urlParse(aPath);
	  var aRootUrl = urlParse(aRoot);
	  if (aRootUrl) {
	    aRoot = aRootUrl.path || '/';
	  }

	  // `join(foo, '//www.example.org')`
	  if (aPathUrl && !aPathUrl.scheme) {
	    if (aRootUrl) {
	      aPathUrl.scheme = aRootUrl.scheme;
	    }
	    return urlGenerate(aPathUrl);
	  }

	  if (aPathUrl || aPath.match(dataUrlRegexp)) {
	    return aPath;
	  }

	  // `join('http://', 'www.example.com')`
	  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
	    aRootUrl.host = aPath;
	    return urlGenerate(aRootUrl);
	  }

	  var joined = aPath.charAt(0) === '/'
	    ? aPath
	    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);

	  if (aRootUrl) {
	    aRootUrl.path = joined;
	    return urlGenerate(aRootUrl);
	  }
	  return joined;
	}
	exports.join = join;

	exports.isAbsolute = function (aPath) {
	  return aPath.charAt(0) === '/' || !!aPath.match(urlRegexp);
	};

	/**
	 * Make a path relative to a URL or another path.
	 *
	 * @param aRoot The root path or URL.
	 * @param aPath The path or URL to be made relative to aRoot.
	 */
	function relative(aRoot, aPath) {
	  if (aRoot === "") {
	    aRoot = ".";
	  }

	  aRoot = aRoot.replace(/\/$/, '');

	  // It is possible for the path to be above the root. In this case, simply
	  // checking whether the root is a prefix of the path won't work. Instead, we
	  // need to remove components from the root one by one, until either we find
	  // a prefix that fits, or we run out of components to remove.
	  var level = 0;
	  while (aPath.indexOf(aRoot + '/') !== 0) {
	    var index = aRoot.lastIndexOf("/");
	    if (index < 0) {
	      return aPath;
	    }

	    // If the only part of the root that is left is the scheme (i.e. http://,
	    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
	    // have exhausted all components, so the path is not relative to the root.
	    aRoot = aRoot.slice(0, index);
	    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
	      return aPath;
	    }

	    ++level;
	  }

	  // Make sure we add a "../" for each component we removed from the root.
	  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
	}
	exports.relative = relative;

	var supportsNullProto = (function () {
	  var obj = Object.create(null);
	  return !('__proto__' in obj);
	}());

	function identity (s) {
	  return s;
	}

	/**
	 * Because behavior goes wacky when you set `__proto__` on objects, we
	 * have to prefix all the strings in our set with an arbitrary character.
	 *
	 * See https://github.com/mozilla/source-map/pull/31 and
	 * https://github.com/mozilla/source-map/issues/30
	 *
	 * @param String aStr
	 */
	function toSetString(aStr) {
	  if (isProtoString(aStr)) {
	    return '$' + aStr;
	  }

	  return aStr;
	}
	exports.toSetString = supportsNullProto ? identity : toSetString;

	function fromSetString(aStr) {
	  if (isProtoString(aStr)) {
	    return aStr.slice(1);
	  }

	  return aStr;
	}
	exports.fromSetString = supportsNullProto ? identity : fromSetString;

	function isProtoString(s) {
	  if (!s) {
	    return false;
	  }

	  var length = s.length;

	  if (length < 9 /* "__proto__".length */) {
	    return false;
	  }

	  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
	      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
	      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
	      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
	      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
	      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
	      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
	      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
	      s.charCodeAt(length - 9) !== 95  /* '_' */) {
	    return false;
	  }

	  for (var i = length - 10; i >= 0; i--) {
	    if (s.charCodeAt(i) !== 36 /* '$' */) {
	      return false;
	    }
	  }

	  return true;
	}

	/**
	 * Comparator between two mappings where the original positions are compared.
	 *
	 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
	 * mappings with the same original source/line/column, but different generated
	 * line and column the same. Useful when searching for a mapping with a
	 * stubbed out mapping.
	 */
	function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
	  var cmp = mappingA.source - mappingB.source;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.originalLine - mappingB.originalLine;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.originalColumn - mappingB.originalColumn;
	  if (cmp !== 0 || onlyCompareOriginal) {
	    return cmp;
	  }

	  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.generatedLine - mappingB.generatedLine;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  return mappingA.name - mappingB.name;
	}
	exports.compareByOriginalPositions = compareByOriginalPositions;

	/**
	 * Comparator between two mappings with deflated source and name indices where
	 * the generated positions are compared.
	 *
	 * Optionally pass in `true` as `onlyCompareGenerated` to consider two
	 * mappings with the same generated line and column, but different
	 * source/name/original line and column the same. Useful when searching for a
	 * mapping with a stubbed out mapping.
	 */
	function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
	  var cmp = mappingA.generatedLine - mappingB.generatedLine;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
	  if (cmp !== 0 || onlyCompareGenerated) {
	    return cmp;
	  }

	  cmp = mappingA.source - mappingB.source;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.originalLine - mappingB.originalLine;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.originalColumn - mappingB.originalColumn;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  return mappingA.name - mappingB.name;
	}
	exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;

	function strcmp(aStr1, aStr2) {
	  if (aStr1 === aStr2) {
	    return 0;
	  }

	  if (aStr1 > aStr2) {
	    return 1;
	  }

	  return -1;
	}

	/**
	 * Comparator between two mappings with inflated source and name strings where
	 * the generated positions are compared.
	 */
	function compareByGeneratedPositionsInflated(mappingA, mappingB) {
	  var cmp = mappingA.generatedLine - mappingB.generatedLine;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = strcmp(mappingA.source, mappingB.source);
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.originalLine - mappingB.originalLine;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  cmp = mappingA.originalColumn - mappingB.originalColumn;
	  if (cmp !== 0) {
	    return cmp;
	  }

	  return strcmp(mappingA.name, mappingB.name);
	}
	exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;
	});
	var util_1 = util.getArg;
	var util_2 = util.urlParse;
	var util_3 = util.urlGenerate;
	var util_4 = util.normalize;
	var util_5 = util.join;
	var util_6 = util.isAbsolute;
	var util_7 = util.relative;
	var util_8 = util.toSetString;
	var util_9 = util.fromSetString;
	var util_10 = util.compareByOriginalPositions;
	var util_11 = util.compareByGeneratedPositionsDeflated;
	var util_12 = util.compareByGeneratedPositionsInflated;

	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */


	var has = Object.prototype.hasOwnProperty;
	var hasNativeMap = typeof Map !== "undefined";

	/**
	 * A data structure which is a combination of an array and a set. Adding a new
	 * member is O(1), testing for membership is O(1), and finding the index of an
	 * element is O(1). Removing elements from the set is not supported. Only
	 * strings are supported for membership.
	 */
	function ArraySet() {
	  this._array = [];
	  this._set = hasNativeMap ? new Map() : Object.create(null);
	}

	/**
	 * Static method for creating ArraySet instances from an existing array.
	 */
	ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
	  var set = new ArraySet();
	  for (var i = 0, len = aArray.length; i < len; i++) {
	    set.add(aArray[i], aAllowDuplicates);
	  }
	  return set;
	};

	/**
	 * Return how many unique items are in this ArraySet. If duplicates have been
	 * added, than those do not count towards the size.
	 *
	 * @returns Number
	 */
	ArraySet.prototype.size = function ArraySet_size() {
	  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
	};

	/**
	 * Add the given string to this set.
	 *
	 * @param String aStr
	 */
	ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
	  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
	  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
	  var idx = this._array.length;
	  if (!isDuplicate || aAllowDuplicates) {
	    this._array.push(aStr);
	  }
	  if (!isDuplicate) {
	    if (hasNativeMap) {
	      this._set.set(aStr, idx);
	    } else {
	      this._set[sStr] = idx;
	    }
	  }
	};

	/**
	 * Is the given string a member of this set?
	 *
	 * @param String aStr
	 */
	ArraySet.prototype.has = function ArraySet_has(aStr) {
	  if (hasNativeMap) {
	    return this._set.has(aStr);
	  } else {
	    var sStr = util.toSetString(aStr);
	    return has.call(this._set, sStr);
	  }
	};

	/**
	 * What is the index of the given string in the array?
	 *
	 * @param String aStr
	 */
	ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
	  if (hasNativeMap) {
	    var idx = this._set.get(aStr);
	    if (idx >= 0) {
	        return idx;
	    }
	  } else {
	    var sStr = util.toSetString(aStr);
	    if (has.call(this._set, sStr)) {
	      return this._set[sStr];
	    }
	  }

	  throw new Error('"' + aStr + '" is not in the set.');
	};

	/**
	 * What is the element at the given index?
	 *
	 * @param Number aIdx
	 */
	ArraySet.prototype.at = function ArraySet_at(aIdx) {
	  if (aIdx >= 0 && aIdx < this._array.length) {
	    return this._array[aIdx];
	  }
	  throw new Error('No element indexed by ' + aIdx);
	};

	/**
	 * Returns the array representation of this set (which has the proper indices
	 * indicated by indexOf). Note that this is a copy of the internal array used
	 * for storing the members so that no one can mess with internal state.
	 */
	ArraySet.prototype.toArray = function ArraySet_toArray() {
	  return this._array.slice();
	};

	var ArraySet_1 = ArraySet;

	var arraySet = {
		ArraySet: ArraySet_1
	};

	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2014 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */



	/**
	 * Determine whether mappingB is after mappingA with respect to generated
	 * position.
	 */
	function generatedPositionAfter(mappingA, mappingB) {
	  // Optimized for most common case
	  var lineA = mappingA.generatedLine;
	  var lineB = mappingB.generatedLine;
	  var columnA = mappingA.generatedColumn;
	  var columnB = mappingB.generatedColumn;
	  return lineB > lineA || lineB == lineA && columnB >= columnA ||
	         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
	}

	/**
	 * A data structure to provide a sorted view of accumulated mappings in a
	 * performance conscious manner. It trades a neglibable overhead in general
	 * case for a large speedup in case of mappings being added in order.
	 */
	function MappingList() {
	  this._array = [];
	  this._sorted = true;
	  // Serves as infimum
	  this._last = {generatedLine: -1, generatedColumn: 0};
	}

	/**
	 * Iterate through internal items. This method takes the same arguments that
	 * `Array.prototype.forEach` takes.
	 *
	 * NOTE: The order of the mappings is NOT guaranteed.
	 */
	MappingList.prototype.unsortedForEach =
	  function MappingList_forEach(aCallback, aThisArg) {
	    this._array.forEach(aCallback, aThisArg);
	  };

	/**
	 * Add the given source mapping.
	 *
	 * @param Object aMapping
	 */
	MappingList.prototype.add = function MappingList_add(aMapping) {
	  if (generatedPositionAfter(this._last, aMapping)) {
	    this._last = aMapping;
	    this._array.push(aMapping);
	  } else {
	    this._sorted = false;
	    this._array.push(aMapping);
	  }
	};

	/**
	 * Returns the flat, sorted array of mappings. The mappings are sorted by
	 * generated position.
	 *
	 * WARNING: This method returns internal data without copying, for
	 * performance. The return value must NOT be mutated, and should be treated as
	 * an immutable borrow. If you want to take ownership, you must make your own
	 * copy.
	 */
	MappingList.prototype.toArray = function MappingList_toArray() {
	  if (!this._sorted) {
	    this._array.sort(util.compareByGeneratedPositionsInflated);
	    this._sorted = true;
	  }
	  return this._array;
	};

	var MappingList_1 = MappingList;

	var mappingList = {
		MappingList: MappingList_1
	};

	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */



	var ArraySet$1 = arraySet.ArraySet;
	var MappingList$1 = mappingList.MappingList;

	/**
	 * An instance of the SourceMapGenerator represents a source map which is
	 * being built incrementally. You may pass an object with the following
	 * properties:
	 *
	 *   - file: The filename of the generated source.
	 *   - sourceRoot: A root for all relative URLs in this source map.
	 */
	function SourceMapGenerator(aArgs) {
	  if (!aArgs) {
	    aArgs = {};
	  }
	  this._file = util.getArg(aArgs, 'file', null);
	  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
	  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
	  this._sources = new ArraySet$1();
	  this._names = new ArraySet$1();
	  this._mappings = new MappingList$1();
	  this._sourcesContents = null;
	}

	SourceMapGenerator.prototype._version = 3;

	/**
	 * Creates a new SourceMapGenerator based on a SourceMapConsumer
	 *
	 * @param aSourceMapConsumer The SourceMap.
	 */
	SourceMapGenerator.fromSourceMap =
	  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
	    var sourceRoot = aSourceMapConsumer.sourceRoot;
	    var generator = new SourceMapGenerator({
	      file: aSourceMapConsumer.file,
	      sourceRoot: sourceRoot
	    });
	    aSourceMapConsumer.eachMapping(function (mapping) {
	      var newMapping = {
	        generated: {
	          line: mapping.generatedLine,
	          column: mapping.generatedColumn
	        }
	      };

	      if (mapping.source != null) {
	        newMapping.source = mapping.source;
	        if (sourceRoot != null) {
	          newMapping.source = util.relative(sourceRoot, newMapping.source);
	        }

	        newMapping.original = {
	          line: mapping.originalLine,
	          column: mapping.originalColumn
	        };

	        if (mapping.name != null) {
	          newMapping.name = mapping.name;
	        }
	      }

	      generator.addMapping(newMapping);
	    });
	    aSourceMapConsumer.sources.forEach(function (sourceFile) {
	      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
	      if (content != null) {
	        generator.setSourceContent(sourceFile, content);
	      }
	    });
	    return generator;
	  };

	/**
	 * Add a single mapping from original source line and column to the generated
	 * source's line and column for this source map being created. The mapping
	 * object should have the following properties:
	 *
	 *   - generated: An object with the generated line and column positions.
	 *   - original: An object with the original line and column positions.
	 *   - source: The original source file (relative to the sourceRoot).
	 *   - name: An optional original token name for this mapping.
	 */
	SourceMapGenerator.prototype.addMapping =
	  function SourceMapGenerator_addMapping(aArgs) {
	    var generated = util.getArg(aArgs, 'generated');
	    var original = util.getArg(aArgs, 'original', null);
	    var source = util.getArg(aArgs, 'source', null);
	    var name = util.getArg(aArgs, 'name', null);

	    if (!this._skipValidation) {
	      this._validateMapping(generated, original, source, name);
	    }

	    if (source != null) {
	      source = String(source);
	      if (!this._sources.has(source)) {
	        this._sources.add(source);
	      }
	    }

	    if (name != null) {
	      name = String(name);
	      if (!this._names.has(name)) {
	        this._names.add(name);
	      }
	    }

	    this._mappings.add({
	      generatedLine: generated.line,
	      generatedColumn: generated.column,
	      originalLine: original != null && original.line,
	      originalColumn: original != null && original.column,
	      source: source,
	      name: name
	    });
	  };

	/**
	 * Set the source content for a source file.
	 */
	SourceMapGenerator.prototype.setSourceContent =
	  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
	    var source = aSourceFile;
	    if (this._sourceRoot != null) {
	      source = util.relative(this._sourceRoot, source);
	    }

	    if (aSourceContent != null) {
	      // Add the source content to the _sourcesContents map.
	      // Create a new _sourcesContents map if the property is null.
	      if (!this._sourcesContents) {
	        this._sourcesContents = Object.create(null);
	      }
	      this._sourcesContents[util.toSetString(source)] = aSourceContent;
	    } else if (this._sourcesContents) {
	      // Remove the source file from the _sourcesContents map.
	      // If the _sourcesContents map is empty, set the property to null.
	      delete this._sourcesContents[util.toSetString(source)];
	      if (Object.keys(this._sourcesContents).length === 0) {
	        this._sourcesContents = null;
	      }
	    }
	  };

	/**
	 * Applies the mappings of a sub-source-map for a specific source file to the
	 * source map being generated. Each mapping to the supplied source file is
	 * rewritten using the supplied source map. Note: The resolution for the
	 * resulting mappings is the minimium of this map and the supplied map.
	 *
	 * @param aSourceMapConsumer The source map to be applied.
	 * @param aSourceFile Optional. The filename of the source file.
	 *        If omitted, SourceMapConsumer's file property will be used.
	 * @param aSourceMapPath Optional. The dirname of the path to the source map
	 *        to be applied. If relative, it is relative to the SourceMapConsumer.
	 *        This parameter is needed when the two source maps aren't in the same
	 *        directory, and the source map to be applied contains relative source
	 *        paths. If so, those relative source paths need to be rewritten
	 *        relative to the SourceMapGenerator.
	 */
	SourceMapGenerator.prototype.applySourceMap =
	  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
	    var sourceFile = aSourceFile;
	    // If aSourceFile is omitted, we will use the file property of the SourceMap
	    if (aSourceFile == null) {
	      if (aSourceMapConsumer.file == null) {
	        throw new Error(
	          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
	          'or the source map\'s "file" property. Both were omitted.'
	        );
	      }
	      sourceFile = aSourceMapConsumer.file;
	    }
	    var sourceRoot = this._sourceRoot;
	    // Make "sourceFile" relative if an absolute Url is passed.
	    if (sourceRoot != null) {
	      sourceFile = util.relative(sourceRoot, sourceFile);
	    }
	    // Applying the SourceMap can add and remove items from the sources and
	    // the names array.
	    var newSources = new ArraySet$1();
	    var newNames = new ArraySet$1();

	    // Find mappings for the "sourceFile"
	    this._mappings.unsortedForEach(function (mapping) {
	      if (mapping.source === sourceFile && mapping.originalLine != null) {
	        // Check if it can be mapped by the source map, then update the mapping.
	        var original = aSourceMapConsumer.originalPositionFor({
	          line: mapping.originalLine,
	          column: mapping.originalColumn
	        });
	        if (original.source != null) {
	          // Copy mapping
	          mapping.source = original.source;
	          if (aSourceMapPath != null) {
	            mapping.source = util.join(aSourceMapPath, mapping.source);
	          }
	          if (sourceRoot != null) {
	            mapping.source = util.relative(sourceRoot, mapping.source);
	          }
	          mapping.originalLine = original.line;
	          mapping.originalColumn = original.column;
	          if (original.name != null) {
	            mapping.name = original.name;
	          }
	        }
	      }

	      var source = mapping.source;
	      if (source != null && !newSources.has(source)) {
	        newSources.add(source);
	      }

	      var name = mapping.name;
	      if (name != null && !newNames.has(name)) {
	        newNames.add(name);
	      }

	    }, this);
	    this._sources = newSources;
	    this._names = newNames;

	    // Copy sourcesContents of applied map.
	    aSourceMapConsumer.sources.forEach(function (sourceFile) {
	      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
	      if (content != null) {
	        if (aSourceMapPath != null) {
	          sourceFile = util.join(aSourceMapPath, sourceFile);
	        }
	        if (sourceRoot != null) {
	          sourceFile = util.relative(sourceRoot, sourceFile);
	        }
	        this.setSourceContent(sourceFile, content);
	      }
	    }, this);
	  };

	/**
	 * A mapping can have one of the three levels of data:
	 *
	 *   1. Just the generated position.
	 *   2. The Generated position, original position, and original source.
	 *   3. Generated and original position, original source, as well as a name
	 *      token.
	 *
	 * To maintain consistency, we validate that any new mapping being added falls
	 * in to one of these categories.
	 */
	SourceMapGenerator.prototype._validateMapping =
	  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
	                                              aName) {
	    // When aOriginal is truthy but has empty values for .line and .column,
	    // it is most likely a programmer error. In this case we throw a very
	    // specific error message to try to guide them the right way.
	    // For example: https://github.com/Polymer/polymer-bundler/pull/519
	    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
	        throw new Error(
	            'original.line and original.column are not numbers -- you probably meant to omit ' +
	            'the original mapping entirely and only map the generated position. If so, pass ' +
	            'null for the original mapping instead of an object with empty or null values.'
	        );
	    }

	    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
	        && aGenerated.line > 0 && aGenerated.column >= 0
	        && !aOriginal && !aSource && !aName) {
	      // Case 1.
	      return;
	    }
	    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
	             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
	             && aGenerated.line > 0 && aGenerated.column >= 0
	             && aOriginal.line > 0 && aOriginal.column >= 0
	             && aSource) {
	      // Cases 2 and 3.
	      return;
	    }
	    else {
	      throw new Error('Invalid mapping: ' + JSON.stringify({
	        generated: aGenerated,
	        source: aSource,
	        original: aOriginal,
	        name: aName
	      }));
	    }
	  };

	/**
	 * Serialize the accumulated mappings in to the stream of base 64 VLQs
	 * specified by the source map format.
	 */
	SourceMapGenerator.prototype._serializeMappings =
	  function SourceMapGenerator_serializeMappings() {
	    var previousGeneratedColumn = 0;
	    var previousGeneratedLine = 1;
	    var previousOriginalColumn = 0;
	    var previousOriginalLine = 0;
	    var previousName = 0;
	    var previousSource = 0;
	    var result = '';
	    var next;
	    var mapping;
	    var nameIdx;
	    var sourceIdx;

	    var mappings = this._mappings.toArray();
	    for (var i = 0, len = mappings.length; i < len; i++) {
	      mapping = mappings[i];
	      next = '';

	      if (mapping.generatedLine !== previousGeneratedLine) {
	        previousGeneratedColumn = 0;
	        while (mapping.generatedLine !== previousGeneratedLine) {
	          next += ';';
	          previousGeneratedLine++;
	        }
	      }
	      else {
	        if (i > 0) {
	          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
	            continue;
	          }
	          next += ',';
	        }
	      }

	      next += base64Vlq.encode(mapping.generatedColumn
	                                 - previousGeneratedColumn);
	      previousGeneratedColumn = mapping.generatedColumn;

	      if (mapping.source != null) {
	        sourceIdx = this._sources.indexOf(mapping.source);
	        next += base64Vlq.encode(sourceIdx - previousSource);
	        previousSource = sourceIdx;

	        // lines are stored 0-based in SourceMap spec version 3
	        next += base64Vlq.encode(mapping.originalLine - 1
	                                   - previousOriginalLine);
	        previousOriginalLine = mapping.originalLine - 1;

	        next += base64Vlq.encode(mapping.originalColumn
	                                   - previousOriginalColumn);
	        previousOriginalColumn = mapping.originalColumn;

	        if (mapping.name != null) {
	          nameIdx = this._names.indexOf(mapping.name);
	          next += base64Vlq.encode(nameIdx - previousName);
	          previousName = nameIdx;
	        }
	      }

	      result += next;
	    }

	    return result;
	  };

	SourceMapGenerator.prototype._generateSourcesContent =
	  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
	    return aSources.map(function (source) {
	      if (!this._sourcesContents) {
	        return null;
	      }
	      if (aSourceRoot != null) {
	        source = util.relative(aSourceRoot, source);
	      }
	      var key = util.toSetString(source);
	      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
	        ? this._sourcesContents[key]
	        : null;
	    }, this);
	  };

	/**
	 * Externalize the source map.
	 */
	SourceMapGenerator.prototype.toJSON =
	  function SourceMapGenerator_toJSON() {
	    var map = {
	      version: this._version,
	      sources: this._sources.toArray(),
	      names: this._names.toArray(),
	      mappings: this._serializeMappings()
	    };
	    if (this._file != null) {
	      map.file = this._file;
	    }
	    if (this._sourceRoot != null) {
	      map.sourceRoot = this._sourceRoot;
	    }
	    if (this._sourcesContents) {
	      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
	    }

	    return map;
	  };

	/**
	 * Render the source map being generated to a string.
	 */
	SourceMapGenerator.prototype.toString =
	  function SourceMapGenerator_toString() {
	    return JSON.stringify(this.toJSON());
	  };

	var SourceMapGenerator_1 = SourceMapGenerator;

	var sourceMapGenerator = {
		SourceMapGenerator: SourceMapGenerator_1
	};

	var binarySearch = createCommonjsModule(function (module, exports) {
	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */

	exports.GREATEST_LOWER_BOUND = 1;
	exports.LEAST_UPPER_BOUND = 2;

	/**
	 * Recursive implementation of binary search.
	 *
	 * @param aLow Indices here and lower do not contain the needle.
	 * @param aHigh Indices here and higher do not contain the needle.
	 * @param aNeedle The element being searched for.
	 * @param aHaystack The non-empty array being searched.
	 * @param aCompare Function which takes two elements and returns -1, 0, or 1.
	 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
	 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
	 *     closest element that is smaller than or greater than the one we are
	 *     searching for, respectively, if the exact element cannot be found.
	 */
	function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
	  // This function terminates when one of the following is true:
	  //
	  //   1. We find the exact element we are looking for.
	  //
	  //   2. We did not find the exact element, but we can return the index of
	  //      the next-closest element.
	  //
	  //   3. We did not find the exact element, and there is no next-closest
	  //      element than the one we are searching for, so we return -1.
	  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
	  var cmp = aCompare(aNeedle, aHaystack[mid], true);
	  if (cmp === 0) {
	    // Found the element we are looking for.
	    return mid;
	  }
	  else if (cmp > 0) {
	    // Our needle is greater than aHaystack[mid].
	    if (aHigh - mid > 1) {
	      // The element is in the upper half.
	      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
	    }

	    // The exact needle element was not found in this haystack. Determine if
	    // we are in termination case (3) or (2) and return the appropriate thing.
	    if (aBias == exports.LEAST_UPPER_BOUND) {
	      return aHigh < aHaystack.length ? aHigh : -1;
	    } else {
	      return mid;
	    }
	  }
	  else {
	    // Our needle is less than aHaystack[mid].
	    if (mid - aLow > 1) {
	      // The element is in the lower half.
	      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
	    }

	    // we are in termination case (3) or (2) and return the appropriate thing.
	    if (aBias == exports.LEAST_UPPER_BOUND) {
	      return mid;
	    } else {
	      return aLow < 0 ? -1 : aLow;
	    }
	  }
	}

	/**
	 * This is an implementation of binary search which will always try and return
	 * the index of the closest element if there is no exact hit. This is because
	 * mappings between original and generated line/col pairs are single points,
	 * and there is an implicit region between each of them, so a miss just means
	 * that you aren't on the very start of a region.
	 *
	 * @param aNeedle The element you are looking for.
	 * @param aHaystack The array that is being searched.
	 * @param aCompare A function which takes the needle and an element in the
	 *     array and returns -1, 0, or 1 depending on whether the needle is less
	 *     than, equal to, or greater than the element, respectively.
	 * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
	 *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
	 *     closest element that is smaller than or greater than the one we are
	 *     searching for, respectively, if the exact element cannot be found.
	 *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
	 */
	exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
	  if (aHaystack.length === 0) {
	    return -1;
	  }

	  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
	                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
	  if (index < 0) {
	    return -1;
	  }

	  // We have found either the exact element, or the next-closest element than
	  // the one we are searching for. However, there may be more than one such
	  // element. Make sure we always return the smallest of these.
	  while (index - 1 >= 0) {
	    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
	      break;
	    }
	    --index;
	  }

	  return index;
	};
	});
	var binarySearch_1 = binarySearch.GREATEST_LOWER_BOUND;
	var binarySearch_2 = binarySearch.LEAST_UPPER_BOUND;
	var binarySearch_3 = binarySearch.search;

	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */

	// It turns out that some (most?) JavaScript engines don't self-host
	// `Array.prototype.sort`. This makes sense because C++ will likely remain
	// faster than JS when doing raw CPU-intensive sorting. However, when using a
	// custom comparator function, calling back and forth between the VM's C++ and
	// JIT'd JS is rather slow *and* loses JIT type information, resulting in
	// worse generated code for the comparator function than would be optimal. In
	// fact, when sorting with a comparator, these costs outweigh the benefits of
	// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
	// a ~3500ms mean speed-up in `bench/bench.html`.

	/**
	 * Swap the elements indexed by `x` and `y` in the array `ary`.
	 *
	 * @param {Array} ary
	 *        The array.
	 * @param {Number} x
	 *        The index of the first item.
	 * @param {Number} y
	 *        The index of the second item.
	 */
	function swap(ary, x, y) {
	  var temp = ary[x];
	  ary[x] = ary[y];
	  ary[y] = temp;
	}

	/**
	 * Returns a random integer within the range `low .. high` inclusive.
	 *
	 * @param {Number} low
	 *        The lower bound on the range.
	 * @param {Number} high
	 *        The upper bound on the range.
	 */
	function randomIntInRange(low, high) {
	  return Math.round(low + (Math.random() * (high - low)));
	}

	/**
	 * The Quick Sort algorithm.
	 *
	 * @param {Array} ary
	 *        An array to sort.
	 * @param {function} comparator
	 *        Function to use to compare two items.
	 * @param {Number} p
	 *        Start index of the array
	 * @param {Number} r
	 *        End index of the array
	 */
	function doQuickSort(ary, comparator, p, r) {
	  // If our lower bound is less than our upper bound, we (1) partition the
	  // array into two pieces and (2) recurse on each half. If it is not, this is
	  // the empty array and our base case.

	  if (p < r) {
	    // (1) Partitioning.
	    //
	    // The partitioning chooses a pivot between `p` and `r` and moves all
	    // elements that are less than or equal to the pivot to the before it, and
	    // all the elements that are greater than it after it. The effect is that
	    // once partition is done, the pivot is in the exact place it will be when
	    // the array is put in sorted order, and it will not need to be moved
	    // again. This runs in O(n) time.

	    // Always choose a random pivot so that an input array which is reverse
	    // sorted does not cause O(n^2) running time.
	    var pivotIndex = randomIntInRange(p, r);
	    var i = p - 1;

	    swap(ary, pivotIndex, r);
	    var pivot = ary[r];

	    // Immediately after `j` is incremented in this loop, the following hold
	    // true:
	    //
	    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
	    //
	    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
	    for (var j = p; j < r; j++) {
	      if (comparator(ary[j], pivot) <= 0) {
	        i += 1;
	        swap(ary, i, j);
	      }
	    }

	    swap(ary, i + 1, j);
	    var q = i + 1;

	    // (2) Recurse on each half.

	    doQuickSort(ary, comparator, p, q - 1);
	    doQuickSort(ary, comparator, q + 1, r);
	  }
	}

	/**
	 * Sort the given array in-place with the given comparator function.
	 *
	 * @param {Array} ary
	 *        An array to sort.
	 * @param {function} comparator
	 *        Function to use to compare two items.
	 */
	var quickSort_1 = function (ary, comparator) {
	  doQuickSort(ary, comparator, 0, ary.length - 1);
	};

	var quickSort = {
		quickSort: quickSort_1
	};

	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */



	var ArraySet$2 = arraySet.ArraySet;

	var quickSort$1 = quickSort.quickSort;

	function SourceMapConsumer(aSourceMap) {
	  var sourceMap = aSourceMap;
	  if (typeof aSourceMap === 'string') {
	    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
	  }

	  return sourceMap.sections != null
	    ? new IndexedSourceMapConsumer(sourceMap)
	    : new BasicSourceMapConsumer(sourceMap);
	}

	SourceMapConsumer.fromSourceMap = function(aSourceMap) {
	  return BasicSourceMapConsumer.fromSourceMap(aSourceMap);
	};

	/**
	 * The version of the source mapping spec that we are consuming.
	 */
	SourceMapConsumer.prototype._version = 3;

	// `__generatedMappings` and `__originalMappings` are arrays that hold the
	// parsed mapping coordinates from the source map's "mappings" attribute. They
	// are lazily instantiated, accessed via the `_generatedMappings` and
	// `_originalMappings` getters respectively, and we only parse the mappings
	// and create these arrays once queried for a source location. We jump through
	// these hoops because there can be many thousands of mappings, and parsing
	// them is expensive, so we only want to do it if we must.
	//
	// Each object in the arrays is of the form:
	//
	//     {
	//       generatedLine: The line number in the generated code,
	//       generatedColumn: The column number in the generated code,
	//       source: The path to the original source file that generated this
	//               chunk of code,
	//       originalLine: The line number in the original source that
	//                     corresponds to this chunk of generated code,
	//       originalColumn: The column number in the original source that
	//                       corresponds to this chunk of generated code,
	//       name: The name of the original symbol which generated this chunk of
	//             code.
	//     }
	//
	// All properties except for `generatedLine` and `generatedColumn` can be
	// `null`.
	//
	// `_generatedMappings` is ordered by the generated positions.
	//
	// `_originalMappings` is ordered by the original positions.

	SourceMapConsumer.prototype.__generatedMappings = null;
	Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
	  get: function () {
	    if (!this.__generatedMappings) {
	      this._parseMappings(this._mappings, this.sourceRoot);
	    }

	    return this.__generatedMappings;
	  }
	});

	SourceMapConsumer.prototype.__originalMappings = null;
	Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
	  get: function () {
	    if (!this.__originalMappings) {
	      this._parseMappings(this._mappings, this.sourceRoot);
	    }

	    return this.__originalMappings;
	  }
	});

	SourceMapConsumer.prototype._charIsMappingSeparator =
	  function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
	    var c = aStr.charAt(index);
	    return c === ";" || c === ",";
	  };

	/**
	 * Parse the mappings in a string in to a data structure which we can easily
	 * query (the ordered arrays in the `this.__generatedMappings` and
	 * `this.__originalMappings` properties).
	 */
	SourceMapConsumer.prototype._parseMappings =
	  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
	    throw new Error("Subclasses must implement _parseMappings");
	  };

	SourceMapConsumer.GENERATED_ORDER = 1;
	SourceMapConsumer.ORIGINAL_ORDER = 2;

	SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
	SourceMapConsumer.LEAST_UPPER_BOUND = 2;

	/**
	 * Iterate over each mapping between an original source/line/column and a
	 * generated line/column in this source map.
	 *
	 * @param Function aCallback
	 *        The function that is called with each mapping.
	 * @param Object aContext
	 *        Optional. If specified, this object will be the value of `this` every
	 *        time that `aCallback` is called.
	 * @param aOrder
	 *        Either `SourceMapConsumer.GENERATED_ORDER` or
	 *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
	 *        iterate over the mappings sorted by the generated file's line/column
	 *        order or the original's source/line/column order, respectively. Defaults to
	 *        `SourceMapConsumer.GENERATED_ORDER`.
	 */
	SourceMapConsumer.prototype.eachMapping =
	  function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
	    var context = aContext || null;
	    var order = aOrder || SourceMapConsumer.GENERATED_ORDER;

	    var mappings;
	    switch (order) {
	    case SourceMapConsumer.GENERATED_ORDER:
	      mappings = this._generatedMappings;
	      break;
	    case SourceMapConsumer.ORIGINAL_ORDER:
	      mappings = this._originalMappings;
	      break;
	    default:
	      throw new Error("Unknown order of iteration.");
	    }

	    var sourceRoot = this.sourceRoot;
	    mappings.map(function (mapping) {
	      var source = mapping.source === null ? null : this._sources.at(mapping.source);
	      if (source != null && sourceRoot != null) {
	        source = util.join(sourceRoot, source);
	      }
	      return {
	        source: source,
	        generatedLine: mapping.generatedLine,
	        generatedColumn: mapping.generatedColumn,
	        originalLine: mapping.originalLine,
	        originalColumn: mapping.originalColumn,
	        name: mapping.name === null ? null : this._names.at(mapping.name)
	      };
	    }, this).forEach(aCallback, context);
	  };

	/**
	 * Returns all generated line and column information for the original source,
	 * line, and column provided. If no column is provided, returns all mappings
	 * corresponding to a either the line we are searching for or the next
	 * closest line that has any mappings. Otherwise, returns all mappings
	 * corresponding to the given line and either the column we are searching for
	 * or the next closest column that has any offsets.
	 *
	 * The only argument is an object with the following properties:
	 *
	 *   - source: The filename of the original source.
	 *   - line: The line number in the original source.
	 *   - column: Optional. the column number in the original source.
	 *
	 * and an array of objects is returned, each with the following properties:
	 *
	 *   - line: The line number in the generated source, or null.
	 *   - column: The column number in the generated source, or null.
	 */
	SourceMapConsumer.prototype.allGeneratedPositionsFor =
	  function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
	    var line = util.getArg(aArgs, 'line');

	    // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
	    // returns the index of the closest mapping less than the needle. By
	    // setting needle.originalColumn to 0, we thus find the last mapping for
	    // the given line, provided such a mapping exists.
	    var needle = {
	      source: util.getArg(aArgs, 'source'),
	      originalLine: line,
	      originalColumn: util.getArg(aArgs, 'column', 0)
	    };

	    if (this.sourceRoot != null) {
	      needle.source = util.relative(this.sourceRoot, needle.source);
	    }
	    if (!this._sources.has(needle.source)) {
	      return [];
	    }
	    needle.source = this._sources.indexOf(needle.source);

	    var mappings = [];

	    var index = this._findMapping(needle,
	                                  this._originalMappings,
	                                  "originalLine",
	                                  "originalColumn",
	                                  util.compareByOriginalPositions,
	                                  binarySearch.LEAST_UPPER_BOUND);
	    if (index >= 0) {
	      var mapping = this._originalMappings[index];

	      if (aArgs.column === undefined) {
	        var originalLine = mapping.originalLine;

	        // Iterate until either we run out of mappings, or we run into
	        // a mapping for a different line than the one we found. Since
	        // mappings are sorted, this is guaranteed to find all mappings for
	        // the line we found.
	        while (mapping && mapping.originalLine === originalLine) {
	          mappings.push({
	            line: util.getArg(mapping, 'generatedLine', null),
	            column: util.getArg(mapping, 'generatedColumn', null),
	            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
	          });

	          mapping = this._originalMappings[++index];
	        }
	      } else {
	        var originalColumn = mapping.originalColumn;

	        // Iterate until either we run out of mappings, or we run into
	        // a mapping for a different line than the one we were searching for.
	        // Since mappings are sorted, this is guaranteed to find all mappings for
	        // the line we are searching for.
	        while (mapping &&
	               mapping.originalLine === line &&
	               mapping.originalColumn == originalColumn) {
	          mappings.push({
	            line: util.getArg(mapping, 'generatedLine', null),
	            column: util.getArg(mapping, 'generatedColumn', null),
	            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
	          });

	          mapping = this._originalMappings[++index];
	        }
	      }
	    }

	    return mappings;
	  };

	var SourceMapConsumer_1 = SourceMapConsumer;

	/**
	 * A BasicSourceMapConsumer instance represents a parsed source map which we can
	 * query for information about the original file positions by giving it a file
	 * position in the generated source.
	 *
	 * The only parameter is the raw source map (either as a JSON string, or
	 * already parsed to an object). According to the spec, source maps have the
	 * following attributes:
	 *
	 *   - version: Which version of the source map spec this map is following.
	 *   - sources: An array of URLs to the original source files.
	 *   - names: An array of identifiers which can be referrenced by individual mappings.
	 *   - sourceRoot: Optional. The URL root from which all sources are relative.
	 *   - sourcesContent: Optional. An array of contents of the original source files.
	 *   - mappings: A string of base64 VLQs which contain the actual mappings.
	 *   - file: Optional. The generated file this source map is associated with.
	 *
	 * Here is an example source map, taken from the source map spec[0]:
	 *
	 *     {
	 *       version : 3,
	 *       file: "out.js",
	 *       sourceRoot : "",
	 *       sources: ["foo.js", "bar.js"],
	 *       names: ["src", "maps", "are", "fun"],
	 *       mappings: "AA,AB;;ABCDE;"
	 *     }
	 *
	 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
	 */
	function BasicSourceMapConsumer(aSourceMap) {
	  var sourceMap = aSourceMap;
	  if (typeof aSourceMap === 'string') {
	    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
	  }

	  var version = util.getArg(sourceMap, 'version');
	  var sources = util.getArg(sourceMap, 'sources');
	  // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
	  // requires the array) to play nice here.
	  var names = util.getArg(sourceMap, 'names', []);
	  var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
	  var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
	  var mappings = util.getArg(sourceMap, 'mappings');
	  var file = util.getArg(sourceMap, 'file', null);

	  // Once again, Sass deviates from the spec and supplies the version as a
	  // string rather than a number, so we use loose equality checking here.
	  if (version != this._version) {
	    throw new Error('Unsupported version: ' + version);
	  }

	  sources = sources
	    .map(String)
	    // Some source maps produce relative source paths like "./foo.js" instead of
	    // "foo.js".  Normalize these first so that future comparisons will succeed.
	    // See bugzil.la/1090768.
	    .map(util.normalize)
	    // Always ensure that absolute sources are internally stored relative to
	    // the source root, if the source root is absolute. Not doing this would
	    // be particularly problematic when the source root is a prefix of the
	    // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
	    .map(function (source) {
	      return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
	        ? util.relative(sourceRoot, source)
	        : source;
	    });

	  // Pass `true` below to allow duplicate names and sources. While source maps
	  // are intended to be compressed and deduplicated, the TypeScript compiler
	  // sometimes generates source maps with duplicates in them. See Github issue
	  // #72 and bugzil.la/889492.
	  this._names = ArraySet$2.fromArray(names.map(String), true);
	  this._sources = ArraySet$2.fromArray(sources, true);

	  this.sourceRoot = sourceRoot;
	  this.sourcesContent = sourcesContent;
	  this._mappings = mappings;
	  this.file = file;
	}

	BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
	BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;

	/**
	 * Create a BasicSourceMapConsumer from a SourceMapGenerator.
	 *
	 * @param SourceMapGenerator aSourceMap
	 *        The source map that will be consumed.
	 * @returns BasicSourceMapConsumer
	 */
	BasicSourceMapConsumer.fromSourceMap =
	  function SourceMapConsumer_fromSourceMap(aSourceMap) {
	    var smc = Object.create(BasicSourceMapConsumer.prototype);

	    var names = smc._names = ArraySet$2.fromArray(aSourceMap._names.toArray(), true);
	    var sources = smc._sources = ArraySet$2.fromArray(aSourceMap._sources.toArray(), true);
	    smc.sourceRoot = aSourceMap._sourceRoot;
	    smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
	                                                            smc.sourceRoot);
	    smc.file = aSourceMap._file;

	    // Because we are modifying the entries (by converting string sources and
	    // names to indices into the sources and names ArraySets), we have to make
	    // a copy of the entry or else bad things happen. Shared mutable state
	    // strikes again! See github issue #191.

	    var generatedMappings = aSourceMap._mappings.toArray().slice();
	    var destGeneratedMappings = smc.__generatedMappings = [];
	    var destOriginalMappings = smc.__originalMappings = [];

	    for (var i = 0, length = generatedMappings.length; i < length; i++) {
	      var srcMapping = generatedMappings[i];
	      var destMapping = new Mapping;
	      destMapping.generatedLine = srcMapping.generatedLine;
	      destMapping.generatedColumn = srcMapping.generatedColumn;

	      if (srcMapping.source) {
	        destMapping.source = sources.indexOf(srcMapping.source);
	        destMapping.originalLine = srcMapping.originalLine;
	        destMapping.originalColumn = srcMapping.originalColumn;

	        if (srcMapping.name) {
	          destMapping.name = names.indexOf(srcMapping.name);
	        }

	        destOriginalMappings.push(destMapping);
	      }

	      destGeneratedMappings.push(destMapping);
	    }

	    quickSort$1(smc.__originalMappings, util.compareByOriginalPositions);

	    return smc;
	  };

	/**
	 * The version of the source mapping spec that we are consuming.
	 */
	BasicSourceMapConsumer.prototype._version = 3;

	/**
	 * The list of original sources.
	 */
	Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
	  get: function () {
	    return this._sources.toArray().map(function (s) {
	      return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
	    }, this);
	  }
	});

	/**
	 * Provide the JIT with a nice shape / hidden class.
	 */
	function Mapping() {
	  this.generatedLine = 0;
	  this.generatedColumn = 0;
	  this.source = null;
	  this.originalLine = null;
	  this.originalColumn = null;
	  this.name = null;
	}

	/**
	 * Parse the mappings in a string in to a data structure which we can easily
	 * query (the ordered arrays in the `this.__generatedMappings` and
	 * `this.__originalMappings` properties).
	 */
	BasicSourceMapConsumer.prototype._parseMappings =
	  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
	    var generatedLine = 1;
	    var previousGeneratedColumn = 0;
	    var previousOriginalLine = 0;
	    var previousOriginalColumn = 0;
	    var previousSource = 0;
	    var previousName = 0;
	    var length = aStr.length;
	    var index = 0;
	    var cachedSegments = {};
	    var temp = {};
	    var originalMappings = [];
	    var generatedMappings = [];
	    var mapping, str, segment, end, value;

	    while (index < length) {
	      if (aStr.charAt(index) === ';') {
	        generatedLine++;
	        index++;
	        previousGeneratedColumn = 0;
	      }
	      else if (aStr.charAt(index) === ',') {
	        index++;
	      }
	      else {
	        mapping = new Mapping();
	        mapping.generatedLine = generatedLine;

	        // Because each offset is encoded relative to the previous one,
	        // many segments often have the same encoding. We can exploit this
	        // fact by caching the parsed variable length fields of each segment,
	        // allowing us to avoid a second parse if we encounter the same
	        // segment again.
	        for (end = index; end < length; end++) {
	          if (this._charIsMappingSeparator(aStr, end)) {
	            break;
	          }
	        }
	        str = aStr.slice(index, end);

	        segment = cachedSegments[str];
	        if (segment) {
	          index += str.length;
	        } else {
	          segment = [];
	          while (index < end) {
	            base64Vlq.decode(aStr, index, temp);
	            value = temp.value;
	            index = temp.rest;
	            segment.push(value);
	          }

	          if (segment.length === 2) {
	            throw new Error('Found a source, but no line and column');
	          }

	          if (segment.length === 3) {
	            throw new Error('Found a source and line, but no column');
	          }

	          cachedSegments[str] = segment;
	        }

	        // Generated column.
	        mapping.generatedColumn = previousGeneratedColumn + segment[0];
	        previousGeneratedColumn = mapping.generatedColumn;

	        if (segment.length > 1) {
	          // Original source.
	          mapping.source = previousSource + segment[1];
	          previousSource += segment[1];

	          // Original line.
	          mapping.originalLine = previousOriginalLine + segment[2];
	          previousOriginalLine = mapping.originalLine;
	          // Lines are stored 0-based
	          mapping.originalLine += 1;

	          // Original column.
	          mapping.originalColumn = previousOriginalColumn + segment[3];
	          previousOriginalColumn = mapping.originalColumn;

	          if (segment.length > 4) {
	            // Original name.
	            mapping.name = previousName + segment[4];
	            previousName += segment[4];
	          }
	        }

	        generatedMappings.push(mapping);
	        if (typeof mapping.originalLine === 'number') {
	          originalMappings.push(mapping);
	        }
	      }
	    }

	    quickSort$1(generatedMappings, util.compareByGeneratedPositionsDeflated);
	    this.__generatedMappings = generatedMappings;

	    quickSort$1(originalMappings, util.compareByOriginalPositions);
	    this.__originalMappings = originalMappings;
	  };

	/**
	 * Find the mapping that best matches the hypothetical "needle" mapping that
	 * we are searching for in the given "haystack" of mappings.
	 */
	BasicSourceMapConsumer.prototype._findMapping =
	  function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
	                                         aColumnName, aComparator, aBias) {
	    // To return the position we are searching for, we must first find the
	    // mapping for the given position and then return the opposite position it
	    // points to. Because the mappings are sorted, we can use binary search to
	    // find the best mapping.

	    if (aNeedle[aLineName] <= 0) {
	      throw new TypeError('Line must be greater than or equal to 1, got '
	                          + aNeedle[aLineName]);
	    }
	    if (aNeedle[aColumnName] < 0) {
	      throw new TypeError('Column must be greater than or equal to 0, got '
	                          + aNeedle[aColumnName]);
	    }

	    return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
	  };

	/**
	 * Compute the last column for each generated mapping. The last column is
	 * inclusive.
	 */
	BasicSourceMapConsumer.prototype.computeColumnSpans =
	  function SourceMapConsumer_computeColumnSpans() {
	    for (var index = 0; index < this._generatedMappings.length; ++index) {
	      var mapping = this._generatedMappings[index];

	      // Mappings do not contain a field for the last generated columnt. We
	      // can come up with an optimistic estimate, however, by assuming that
	      // mappings are contiguous (i.e. given two consecutive mappings, the
	      // first mapping ends where the second one starts).
	      if (index + 1 < this._generatedMappings.length) {
	        var nextMapping = this._generatedMappings[index + 1];

	        if (mapping.generatedLine === nextMapping.generatedLine) {
	          mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
	          continue;
	        }
	      }

	      // The last mapping for each line spans the entire line.
	      mapping.lastGeneratedColumn = Infinity;
	    }
	  };

	/**
	 * Returns the original source, line, and column information for the generated
	 * source's line and column positions provided. The only argument is an object
	 * with the following properties:
	 *
	 *   - line: The line number in the generated source.
	 *   - column: The column number in the generated source.
	 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
	 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
	 *     closest element that is smaller than or greater than the one we are
	 *     searching for, respectively, if the exact element cannot be found.
	 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
	 *
	 * and an object is returned with the following properties:
	 *
	 *   - source: The original source file, or null.
	 *   - line: The line number in the original source, or null.
	 *   - column: The column number in the original source, or null.
	 *   - name: The original identifier, or null.
	 */
	BasicSourceMapConsumer.prototype.originalPositionFor =
	  function SourceMapConsumer_originalPositionFor(aArgs) {
	    var needle = {
	      generatedLine: util.getArg(aArgs, 'line'),
	      generatedColumn: util.getArg(aArgs, 'column')
	    };

	    var index = this._findMapping(
	      needle,
	      this._generatedMappings,
	      "generatedLine",
	      "generatedColumn",
	      util.compareByGeneratedPositionsDeflated,
	      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
	    );

	    if (index >= 0) {
	      var mapping = this._generatedMappings[index];

	      if (mapping.generatedLine === needle.generatedLine) {
	        var source = util.getArg(mapping, 'source', null);
	        if (source !== null) {
	          source = this._sources.at(source);
	          if (this.sourceRoot != null) {
	            source = util.join(this.sourceRoot, source);
	          }
	        }
	        var name = util.getArg(mapping, 'name', null);
	        if (name !== null) {
	          name = this._names.at(name);
	        }
	        return {
	          source: source,
	          line: util.getArg(mapping, 'originalLine', null),
	          column: util.getArg(mapping, 'originalColumn', null),
	          name: name
	        };
	      }
	    }

	    return {
	      source: null,
	      line: null,
	      column: null,
	      name: null
	    };
	  };

	/**
	 * Return true if we have the source content for every source in the source
	 * map, false otherwise.
	 */
	BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
	  function BasicSourceMapConsumer_hasContentsOfAllSources() {
	    if (!this.sourcesContent) {
	      return false;
	    }
	    return this.sourcesContent.length >= this._sources.size() &&
	      !this.sourcesContent.some(function (sc) { return sc == null; });
	  };

	/**
	 * Returns the original source content. The only argument is the url of the
	 * original source file. Returns null if no original source content is
	 * available.
	 */
	BasicSourceMapConsumer.prototype.sourceContentFor =
	  function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
	    if (!this.sourcesContent) {
	      return null;
	    }

	    if (this.sourceRoot != null) {
	      aSource = util.relative(this.sourceRoot, aSource);
	    }

	    if (this._sources.has(aSource)) {
	      return this.sourcesContent[this._sources.indexOf(aSource)];
	    }

	    var url;
	    if (this.sourceRoot != null
	        && (url = util.urlParse(this.sourceRoot))) {
	      // XXX: file:// URIs and absolute paths lead to unexpected behavior for
	      // many users. We can help them out when they expect file:// URIs to
	      // behave like it would if they were running a local HTTP server. See
	      // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
	      var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
	      if (url.scheme == "file"
	          && this._sources.has(fileUriAbsPath)) {
	        return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
	      }

	      if ((!url.path || url.path == "/")
	          && this._sources.has("/" + aSource)) {
	        return this.sourcesContent[this._sources.indexOf("/" + aSource)];
	      }
	    }

	    // This function is used recursively from
	    // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
	    // don't want to throw if we can't find the source - we just want to
	    // return null, so we provide a flag to exit gracefully.
	    if (nullOnMissing) {
	      return null;
	    }
	    else {
	      throw new Error('"' + aSource + '" is not in the SourceMap.');
	    }
	  };

	/**
	 * Returns the generated line and column information for the original source,
	 * line, and column positions provided. The only argument is an object with
	 * the following properties:
	 *
	 *   - source: The filename of the original source.
	 *   - line: The line number in the original source.
	 *   - column: The column number in the original source.
	 *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
	 *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
	 *     closest element that is smaller than or greater than the one we are
	 *     searching for, respectively, if the exact element cannot be found.
	 *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
	 *
	 * and an object is returned with the following properties:
	 *
	 *   - line: The line number in the generated source, or null.
	 *   - column: The column number in the generated source, or null.
	 */
	BasicSourceMapConsumer.prototype.generatedPositionFor =
	  function SourceMapConsumer_generatedPositionFor(aArgs) {
	    var source = util.getArg(aArgs, 'source');
	    if (this.sourceRoot != null) {
	      source = util.relative(this.sourceRoot, source);
	    }
	    if (!this._sources.has(source)) {
	      return {
	        line: null,
	        column: null,
	        lastColumn: null
	      };
	    }
	    source = this._sources.indexOf(source);

	    var needle = {
	      source: source,
	      originalLine: util.getArg(aArgs, 'line'),
	      originalColumn: util.getArg(aArgs, 'column')
	    };

	    var index = this._findMapping(
	      needle,
	      this._originalMappings,
	      "originalLine",
	      "originalColumn",
	      util.compareByOriginalPositions,
	      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
	    );

	    if (index >= 0) {
	      var mapping = this._originalMappings[index];

	      if (mapping.source === needle.source) {
	        return {
	          line: util.getArg(mapping, 'generatedLine', null),
	          column: util.getArg(mapping, 'generatedColumn', null),
	          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
	        };
	      }
	    }

	    return {
	      line: null,
	      column: null,
	      lastColumn: null
	    };
	  };

	var BasicSourceMapConsumer_1 = BasicSourceMapConsumer;

	/**
	 * An IndexedSourceMapConsumer instance represents a parsed source map which
	 * we can query for information. It differs from BasicSourceMapConsumer in
	 * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
	 * input.
	 *
	 * The only parameter is a raw source map (either as a JSON string, or already
	 * parsed to an object). According to the spec for indexed source maps, they
	 * have the following attributes:
	 *
	 *   - version: Which version of the source map spec this map is following.
	 *   - file: Optional. The generated file this source map is associated with.
	 *   - sections: A list of section definitions.
	 *
	 * Each value under the "sections" field has two fields:
	 *   - offset: The offset into the original specified at which this section
	 *       begins to apply, defined as an object with a "line" and "column"
	 *       field.
	 *   - map: A source map definition. This source map could also be indexed,
	 *       but doesn't have to be.
	 *
	 * Instead of the "map" field, it's also possible to have a "url" field
	 * specifying a URL to retrieve a source map from, but that's currently
	 * unsupported.
	 *
	 * Here's an example source map, taken from the source map spec[0], but
	 * modified to omit a section which uses the "url" field.
	 *
	 *  {
	 *    version : 3,
	 *    file: "app.js",
	 *    sections: [{
	 *      offset: {line:100, column:10},
	 *      map: {
	 *        version : 3,
	 *        file: "section.js",
	 *        sources: ["foo.js", "bar.js"],
	 *        names: ["src", "maps", "are", "fun"],
	 *        mappings: "AAAA,E;;ABCDE;"
	 *      }
	 *    }],
	 *  }
	 *
	 * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
	 */
	function IndexedSourceMapConsumer(aSourceMap) {
	  var sourceMap = aSourceMap;
	  if (typeof aSourceMap === 'string') {
	    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
	  }

	  var version = util.getArg(sourceMap, 'version');
	  var sections = util.getArg(sourceMap, 'sections');

	  if (version != this._version) {
	    throw new Error('Unsupported version: ' + version);
	  }

	  this._sources = new ArraySet$2();
	  this._names = new ArraySet$2();

	  var lastOffset = {
	    line: -1,
	    column: 0
	  };
	  this._sections = sections.map(function (s) {
	    if (s.url) {
	      // The url field will require support for asynchronicity.
	      // See https://github.com/mozilla/source-map/issues/16
	      throw new Error('Support for url field in sections not implemented.');
	    }
	    var offset = util.getArg(s, 'offset');
	    var offsetLine = util.getArg(offset, 'line');
	    var offsetColumn = util.getArg(offset, 'column');

	    if (offsetLine < lastOffset.line ||
	        (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
	      throw new Error('Section offsets must be ordered and non-overlapping.');
	    }
	    lastOffset = offset;

	    return {
	      generatedOffset: {
	        // The offset fields are 0-based, but we use 1-based indices when
	        // encoding/decoding from VLQ.
	        generatedLine: offsetLine + 1,
	        generatedColumn: offsetColumn + 1
	      },
	      consumer: new SourceMapConsumer(util.getArg(s, 'map'))
	    }
	  });
	}

	IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
	IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;

	/**
	 * The version of the source mapping spec that we are consuming.
	 */
	IndexedSourceMapConsumer.prototype._version = 3;

	/**
	 * The list of original sources.
	 */
	Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
	  get: function () {
	    var sources = [];
	    for (var i = 0; i < this._sections.length; i++) {
	      for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
	        sources.push(this._sections[i].consumer.sources[j]);
	      }
	    }
	    return sources;
	  }
	});

	/**
	 * Returns the original source, line, and column information for the generated
	 * source's line and column positions provided. The only argument is an object
	 * with the following properties:
	 *
	 *   - line: The line number in the generated source.
	 *   - column: The column number in the generated source.
	 *
	 * and an object is returned with the following properties:
	 *
	 *   - source: The original source file, or null.
	 *   - line: The line number in the original source, or null.
	 *   - column: The column number in the original source, or null.
	 *   - name: The original identifier, or null.
	 */
	IndexedSourceMapConsumer.prototype.originalPositionFor =
	  function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
	    var needle = {
	      generatedLine: util.getArg(aArgs, 'line'),
	      generatedColumn: util.getArg(aArgs, 'column')
	    };

	    // Find the section containing the generated position we're trying to map
	    // to an original position.
	    var sectionIndex = binarySearch.search(needle, this._sections,
	      function(needle, section) {
	        var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
	        if (cmp) {
	          return cmp;
	        }

	        return (needle.generatedColumn -
	                section.generatedOffset.generatedColumn);
	      });
	    var section = this._sections[sectionIndex];

	    if (!section) {
	      return {
	        source: null,
	        line: null,
	        column: null,
	        name: null
	      };
	    }

	    return section.consumer.originalPositionFor({
	      line: needle.generatedLine -
	        (section.generatedOffset.generatedLine - 1),
	      column: needle.generatedColumn -
	        (section.generatedOffset.generatedLine === needle.generatedLine
	         ? section.generatedOffset.generatedColumn - 1
	         : 0),
	      bias: aArgs.bias
	    });
	  };

	/**
	 * Return true if we have the source content for every source in the source
	 * map, false otherwise.
	 */
	IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
	  function IndexedSourceMapConsumer_hasContentsOfAllSources() {
	    return this._sections.every(function (s) {
	      return s.consumer.hasContentsOfAllSources();
	    });
	  };

	/**
	 * Returns the original source content. The only argument is the url of the
	 * original source file. Returns null if no original source content is
	 * available.
	 */
	IndexedSourceMapConsumer.prototype.sourceContentFor =
	  function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
	    for (var i = 0; i < this._sections.length; i++) {
	      var section = this._sections[i];

	      var content = section.consumer.sourceContentFor(aSource, true);
	      if (content) {
	        return content;
	      }
	    }
	    if (nullOnMissing) {
	      return null;
	    }
	    else {
	      throw new Error('"' + aSource + '" is not in the SourceMap.');
	    }
	  };

	/**
	 * Returns the generated line and column information for the original source,
	 * line, and column positions provided. The only argument is an object with
	 * the following properties:
	 *
	 *   - source: The filename of the original source.
	 *   - line: The line number in the original source.
	 *   - column: The column number in the original source.
	 *
	 * and an object is returned with the following properties:
	 *
	 *   - line: The line number in the generated source, or null.
	 *   - column: The column number in the generated source, or null.
	 */
	IndexedSourceMapConsumer.prototype.generatedPositionFor =
	  function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
	    for (var i = 0; i < this._sections.length; i++) {
	      var section = this._sections[i];

	      // Only consider this section if the requested source is in the list of
	      // sources of the consumer.
	      if (section.consumer.sources.indexOf(util.getArg(aArgs, 'source')) === -1) {
	        continue;
	      }
	      var generatedPosition = section.consumer.generatedPositionFor(aArgs);
	      if (generatedPosition) {
	        var ret = {
	          line: generatedPosition.line +
	            (section.generatedOffset.generatedLine - 1),
	          column: generatedPosition.column +
	            (section.generatedOffset.generatedLine === generatedPosition.line
	             ? section.generatedOffset.generatedColumn - 1
	             : 0)
	        };
	        return ret;
	      }
	    }

	    return {
	      line: null,
	      column: null
	    };
	  };

	/**
	 * Parse the mappings in a string in to a data structure which we can easily
	 * query (the ordered arrays in the `this.__generatedMappings` and
	 * `this.__originalMappings` properties).
	 */
	IndexedSourceMapConsumer.prototype._parseMappings =
	  function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
	    this.__generatedMappings = [];
	    this.__originalMappings = [];
	    for (var i = 0; i < this._sections.length; i++) {
	      var section = this._sections[i];
	      var sectionMappings = section.consumer._generatedMappings;
	      for (var j = 0; j < sectionMappings.length; j++) {
	        var mapping = sectionMappings[j];

	        var source = section.consumer._sources.at(mapping.source);
	        if (section.consumer.sourceRoot !== null) {
	          source = util.join(section.consumer.sourceRoot, source);
	        }
	        this._sources.add(source);
	        source = this._sources.indexOf(source);

	        var name = section.consumer._names.at(mapping.name);
	        this._names.add(name);
	        name = this._names.indexOf(name);

	        // The mappings coming from the consumer for the section have
	        // generated positions relative to the start of the section, so we
	        // need to offset them to be relative to the start of the concatenated
	        // generated file.
	        var adjustedMapping = {
	          source: source,
	          generatedLine: mapping.generatedLine +
	            (section.generatedOffset.generatedLine - 1),
	          generatedColumn: mapping.generatedColumn +
	            (section.generatedOffset.generatedLine === mapping.generatedLine
	            ? section.generatedOffset.generatedColumn - 1
	            : 0),
	          originalLine: mapping.originalLine,
	          originalColumn: mapping.originalColumn,
	          name: name
	        };

	        this.__generatedMappings.push(adjustedMapping);
	        if (typeof adjustedMapping.originalLine === 'number') {
	          this.__originalMappings.push(adjustedMapping);
	        }
	      }
	    }

	    quickSort$1(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
	    quickSort$1(this.__originalMappings, util.compareByOriginalPositions);
	  };

	var IndexedSourceMapConsumer_1 = IndexedSourceMapConsumer;

	var sourceMapConsumer = {
		SourceMapConsumer: SourceMapConsumer_1,
		BasicSourceMapConsumer: BasicSourceMapConsumer_1,
		IndexedSourceMapConsumer: IndexedSourceMapConsumer_1
	};

	/* -*- Mode: js; js-indent-level: 2; -*- */
	/*
	 * Copyright 2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */

	var SourceMapGenerator$1 = sourceMapGenerator.SourceMapGenerator;


	// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
	// operating systems these days (capturing the result).
	var REGEX_NEWLINE = /(\r?\n)/;

	// Newline character code for charCodeAt() comparisons
	var NEWLINE_CODE = 10;

	// Private symbol for identifying `SourceNode`s when multiple versions of
	// the source-map library are loaded. This MUST NOT CHANGE across
	// versions!
	var isSourceNode = "$$$isSourceNode$$$";

	/**
	 * SourceNodes provide a way to abstract over interpolating/concatenating
	 * snippets of generated JavaScript source code while maintaining the line and
	 * column information associated with the original source code.
	 *
	 * @param aLine The original line number.
	 * @param aColumn The original column number.
	 * @param aSource The original source's filename.
	 * @param aChunks Optional. An array of strings which are snippets of
	 *        generated JS, or other SourceNodes.
	 * @param aName The original identifier.
	 */
	function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
	  this.children = [];
	  this.sourceContents = {};
	  this.line = aLine == null ? null : aLine;
	  this.column = aColumn == null ? null : aColumn;
	  this.source = aSource == null ? null : aSource;
	  this.name = aName == null ? null : aName;
	  this[isSourceNode] = true;
	  if (aChunks != null) this.add(aChunks);
	}

	/**
	 * Creates a SourceNode from generated code and a SourceMapConsumer.
	 *
	 * @param aGeneratedCode The generated code
	 * @param aSourceMapConsumer The SourceMap for the generated code
	 * @param aRelativePath Optional. The path that relative sources in the
	 *        SourceMapConsumer should be relative to.
	 */
	SourceNode.fromStringWithSourceMap =
	  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
	    // The SourceNode we want to fill with the generated code
	    // and the SourceMap
	    var node = new SourceNode();

	    // All even indices of this array are one line of the generated code,
	    // while all odd indices are the newlines between two adjacent lines
	    // (since `REGEX_NEWLINE` captures its match).
	    // Processed fragments are accessed by calling `shiftNextLine`.
	    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
	    var remainingLinesIndex = 0;
	    var shiftNextLine = function() {
	      var lineContents = getNextLine();
	      // The last line of a file might not have a newline.
	      var newLine = getNextLine() || "";
	      return lineContents + newLine;

	      function getNextLine() {
	        return remainingLinesIndex < remainingLines.length ?
	            remainingLines[remainingLinesIndex++] : undefined;
	      }
	    };

	    // We need to remember the position of "remainingLines"
	    var lastGeneratedLine = 1, lastGeneratedColumn = 0;

	    // The generate SourceNodes we need a code range.
	    // To extract it current and last mapping is used.
	    // Here we store the last mapping.
	    var lastMapping = null;

	    aSourceMapConsumer.eachMapping(function (mapping) {
	      if (lastMapping !== null) {
	        // We add the code from "lastMapping" to "mapping":
	        // First check if there is a new line in between.
	        if (lastGeneratedLine < mapping.generatedLine) {
	          // Associate first line with "lastMapping"
	          addMappingWithCode(lastMapping, shiftNextLine());
	          lastGeneratedLine++;
	          lastGeneratedColumn = 0;
	          // The remaining code is added without mapping
	        } else {
	          // There is no new line in between.
	          // Associate the code between "lastGeneratedColumn" and
	          // "mapping.generatedColumn" with "lastMapping"
	          var nextLine = remainingLines[remainingLinesIndex];
	          var code = nextLine.substr(0, mapping.generatedColumn -
	                                        lastGeneratedColumn);
	          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
	                                              lastGeneratedColumn);
	          lastGeneratedColumn = mapping.generatedColumn;
	          addMappingWithCode(lastMapping, code);
	          // No more remaining code, continue
	          lastMapping = mapping;
	          return;
	        }
	      }
	      // We add the generated code until the first mapping
	      // to the SourceNode without any mapping.
	      // Each line is added as separate string.
	      while (lastGeneratedLine < mapping.generatedLine) {
	        node.add(shiftNextLine());
	        lastGeneratedLine++;
	      }
	      if (lastGeneratedColumn < mapping.generatedColumn) {
	        var nextLine = remainingLines[remainingLinesIndex];
	        node.add(nextLine.substr(0, mapping.generatedColumn));
	        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
	        lastGeneratedColumn = mapping.generatedColumn;
	      }
	      lastMapping = mapping;
	    }, this);
	    // We have processed all mappings.
	    if (remainingLinesIndex < remainingLines.length) {
	      if (lastMapping) {
	        // Associate the remaining code in the current line with "lastMapping"
	        addMappingWithCode(lastMapping, shiftNextLine());
	      }
	      // and add the remaining lines without any mapping
	      node.add(remainingLines.splice(remainingLinesIndex).join(""));
	    }

	    // Copy sourcesContent into SourceNode
	    aSourceMapConsumer.sources.forEach(function (sourceFile) {
	      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
	      if (content != null) {
	        if (aRelativePath != null) {
	          sourceFile = util.join(aRelativePath, sourceFile);
	        }
	        node.setSourceContent(sourceFile, content);
	      }
	    });

	    return node;

	    function addMappingWithCode(mapping, code) {
	      if (mapping === null || mapping.source === undefined) {
	        node.add(code);
	      } else {
	        var source = aRelativePath
	          ? util.join(aRelativePath, mapping.source)
	          : mapping.source;
	        node.add(new SourceNode(mapping.originalLine,
	                                mapping.originalColumn,
	                                source,
	                                code,
	                                mapping.name));
	      }
	    }
	  };

	/**
	 * Add a chunk of generated JS to this source node.
	 *
	 * @param aChunk A string snippet of generated JS code, another instance of
	 *        SourceNode, or an array where each member is one of those things.
	 */
	SourceNode.prototype.add = function SourceNode_add(aChunk) {
	  if (Array.isArray(aChunk)) {
	    aChunk.forEach(function (chunk) {
	      this.add(chunk);
	    }, this);
	  }
	  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
	    if (aChunk) {
	      this.children.push(aChunk);
	    }
	  }
	  else {
	    throw new TypeError(
	      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
	    );
	  }
	  return this;
	};

	/**
	 * Add a chunk of generated JS to the beginning of this source node.
	 *
	 * @param aChunk A string snippet of generated JS code, another instance of
	 *        SourceNode, or an array where each member is one of those things.
	 */
	SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
	  if (Array.isArray(aChunk)) {
	    for (var i = aChunk.length-1; i >= 0; i--) {
	      this.prepend(aChunk[i]);
	    }
	  }
	  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
	    this.children.unshift(aChunk);
	  }
	  else {
	    throw new TypeError(
	      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
	    );
	  }
	  return this;
	};

	/**
	 * Walk over the tree of JS snippets in this node and its children. The
	 * walking function is called once for each snippet of JS and is passed that
	 * snippet and the its original associated source's line/column location.
	 *
	 * @param aFn The traversal function.
	 */
	SourceNode.prototype.walk = function SourceNode_walk(aFn) {
	  var chunk;
	  for (var i = 0, len = this.children.length; i < len; i++) {
	    chunk = this.children[i];
	    if (chunk[isSourceNode]) {
	      chunk.walk(aFn);
	    }
	    else {
	      if (chunk !== '') {
	        aFn(chunk, { source: this.source,
	                     line: this.line,
	                     column: this.column,
	                     name: this.name });
	      }
	    }
	  }
	};

	/**
	 * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
	 * each of `this.children`.
	 *
	 * @param aSep The separator.
	 */
	SourceNode.prototype.join = function SourceNode_join(aSep) {
	  var newChildren;
	  var i;
	  var len = this.children.length;
	  if (len > 0) {
	    newChildren = [];
	    for (i = 0; i < len-1; i++) {
	      newChildren.push(this.children[i]);
	      newChildren.push(aSep);
	    }
	    newChildren.push(this.children[i]);
	    this.children = newChildren;
	  }
	  return this;
	};

	/**
	 * Call String.prototype.replace on the very right-most source snippet. Useful
	 * for trimming whitespace from the end of a source node, etc.
	 *
	 * @param aPattern The pattern to replace.
	 * @param aReplacement The thing to replace the pattern with.
	 */
	SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
	  var lastChild = this.children[this.children.length - 1];
	  if (lastChild[isSourceNode]) {
	    lastChild.replaceRight(aPattern, aReplacement);
	  }
	  else if (typeof lastChild === 'string') {
	    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
	  }
	  else {
	    this.children.push(''.replace(aPattern, aReplacement));
	  }
	  return this;
	};

	/**
	 * Set the source content for a source file. This will be added to the SourceMapGenerator
	 * in the sourcesContent field.
	 *
	 * @param aSourceFile The filename of the source file
	 * @param aSourceContent The content of the source file
	 */
	SourceNode.prototype.setSourceContent =
	  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
	    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
	  };

	/**
	 * Walk over the tree of SourceNodes. The walking function is called for each
	 * source file content and is passed the filename and source content.
	 *
	 * @param aFn The traversal function.
	 */
	SourceNode.prototype.walkSourceContents =
	  function SourceNode_walkSourceContents(aFn) {
	    for (var i = 0, len = this.children.length; i < len; i++) {
	      if (this.children[i][isSourceNode]) {
	        this.children[i].walkSourceContents(aFn);
	      }
	    }

	    var sources = Object.keys(this.sourceContents);
	    for (var i = 0, len = sources.length; i < len; i++) {
	      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
	    }
	  };

	/**
	 * Return the string representation of this source node. Walks over the tree
	 * and concatenates all the various snippets together to one string.
	 */
	SourceNode.prototype.toString = function SourceNode_toString() {
	  var str = "";
	  this.walk(function (chunk) {
	    str += chunk;
	  });
	  return str;
	};

	/**
	 * Returns the string representation of this source node along with a source
	 * map.
	 */
	SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
	  var generated = {
	    code: "",
	    line: 1,
	    column: 0
	  };
	  var map = new SourceMapGenerator$1(aArgs);
	  var sourceMappingActive = false;
	  var lastOriginalSource = null;
	  var lastOriginalLine = null;
	  var lastOriginalColumn = null;
	  var lastOriginalName = null;
	  this.walk(function (chunk, original) {
	    generated.code += chunk;
	    if (original.source !== null
	        && original.line !== null
	        && original.column !== null) {
	      if(lastOriginalSource !== original.source
	         || lastOriginalLine !== original.line
	         || lastOriginalColumn !== original.column
	         || lastOriginalName !== original.name) {
	        map.addMapping({
	          source: original.source,
	          original: {
	            line: original.line,
	            column: original.column
	          },
	          generated: {
	            line: generated.line,
	            column: generated.column
	          },
	          name: original.name
	        });
	      }
	      lastOriginalSource = original.source;
	      lastOriginalLine = original.line;
	      lastOriginalColumn = original.column;
	      lastOriginalName = original.name;
	      sourceMappingActive = true;
	    } else if (sourceMappingActive) {
	      map.addMapping({
	        generated: {
	          line: generated.line,
	          column: generated.column
	        }
	      });
	      lastOriginalSource = null;
	      sourceMappingActive = false;
	    }
	    for (var idx = 0, length = chunk.length; idx < length; idx++) {
	      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
	        generated.line++;
	        generated.column = 0;
	        // Mappings end at eol
	        if (idx + 1 === length) {
	          lastOriginalSource = null;
	          sourceMappingActive = false;
	        } else if (sourceMappingActive) {
	          map.addMapping({
	            source: original.source,
	            original: {
	              line: original.line,
	              column: original.column
	            },
	            generated: {
	              line: generated.line,
	              column: generated.column
	            },
	            name: original.name
	          });
	        }
	      } else {
	        generated.column++;
	      }
	    }
	  });
	  this.walkSourceContents(function (sourceFile, sourceContent) {
	    map.setSourceContent(sourceFile, sourceContent);
	  });

	  return { code: generated.code, map: map };
	};

	var SourceNode_1 = SourceNode;

	var sourceNode = {
		SourceNode: SourceNode_1
	};

	/*
	 * Copyright 2009-2011 Mozilla Foundation and contributors
	 * Licensed under the New BSD license. See LICENSE.txt or:
	 * http://opensource.org/licenses/BSD-3-Clause
	 */
	var SourceMapGenerator$2 = sourceMapGenerator.SourceMapGenerator;
	var SourceMapConsumer$1 = sourceMapConsumer.SourceMapConsumer;
	var SourceNode$1 = sourceNode.SourceNode;

	var sourceMap = {
		SourceMapGenerator: SourceMapGenerator$2,
		SourceMapConsumer: SourceMapConsumer$1,
		SourceNode: SourceNode$1
	};

	var SourceMapGenerator$3 = sourceMap.SourceMapGenerator;
	var trackNodes = {
	    Atrule: true,
	    Selector: true,
	    Declaration: true
	};

	var sourceMap$1 = function generateSourceMap(handlers) {
	    var map = new SourceMapGenerator$3();
	    var line = 1;
	    var column = 0;
	    var generated = {
	        line: 1,
	        column: 0
	    };
	    var original = {
	        line: 0, // should be zero to add first mapping
	        column: 0
	    };
	    var sourceMappingActive = false;
	    var activatedGenerated = {
	        line: 1,
	        column: 0
	    };
	    var activatedMapping = {
	        generated: activatedGenerated
	    };

	    var handlersNode = handlers.node;
	    handlers.node = function(node) {
	        if (node.loc && node.loc.start && trackNodes.hasOwnProperty(node.type)) {
	            var nodeLine = node.loc.start.line;
	            var nodeColumn = node.loc.start.column - 1;

	            if (original.line !== nodeLine ||
	                original.column !== nodeColumn) {
	                original.line = nodeLine;
	                original.column = nodeColumn;

	                generated.line = line;
	                generated.column = column;

	                if (sourceMappingActive) {
	                    sourceMappingActive = false;
	                    if (generated.line !== activatedGenerated.line ||
	                        generated.column !== activatedGenerated.column) {
	                        map.addMapping(activatedMapping);
	                    }
	                }

	                sourceMappingActive = true;
	                map.addMapping({
	                    source: node.loc.source,
	                    original: original,
	                    generated: generated
	                });
	            }
	        }

	        handlersNode.call(this, node);

	        if (sourceMappingActive && trackNodes.hasOwnProperty(node.type)) {
	            activatedGenerated.line = line;
	            activatedGenerated.column = column;
	        }
	    };

	    var handlersChunk = handlers.chunk;
	    handlers.chunk = function(chunk) {
	        for (var i = 0; i < chunk.length; i++) {
	            if (chunk.charCodeAt(i) === 10) { // \n
	                line++;
	                column = 0;
	            } else {
	                column++;
	            }
	        }

	        handlersChunk(chunk);
	    };

	    var handlersResult = handlers.result;
	    handlers.result = function() {
	        if (sourceMappingActive) {
	            map.addMapping(activatedMapping);
	        }

	        return {
	            css: handlersResult(),
	            map: map
	        };
	    };

	    return handlers;
	};

	var hasOwnProperty$3 = Object.prototype.hasOwnProperty;

	function processChildren(node, delimeter) {
	    var list = node.children;
	    var prev = null;

	    if (typeof delimeter !== 'function') {
	        list.forEach(this.node, this);
	    } else {
	        list.forEach(function(node) {
	            if (prev !== null) {
	                delimeter.call(this, prev);
	            }

	            this.node(node);
	            prev = node;
	        }, this);
	    }
	}

	var create$2 = function createGenerator(config) {
	    function processNode(node) {
	        if (hasOwnProperty$3.call(types, node.type)) {
	            types[node.type].call(this, node);
	        } else {
	            throw new Error('Unknown node type: ' + node.type);
	        }
	    }

	    var types = {};

	    if (config.node) {
	        for (var name in config.node) {
	            types[name] = config.node[name].generate;
	        }
	    }

	    return function(node, options) {
	        var buffer = '';
	        var handlers = {
	            children: processChildren,
	            node: processNode,
	            chunk: function(chunk) {
	                buffer += chunk;
	            },
	            result: function() {
	                return buffer;
	            }
	        };

	        if (options) {
	            if (typeof options.decorator === 'function') {
	                handlers = options.decorator(handlers);
	            }

	            if (options.sourceMap) {
	                handlers = sourceMap$1(handlers);
	            }
	        }

	        handlers.node(node);

	        return handlers.result();
	    };
	};

	var create$3 = function createConvertors(walk) {
	    return {
	        fromPlainObject: function(ast) {
	            walk(ast, {
	                enter: function(node) {
	                    if (node.children && node.children instanceof list === false) {
	                        node.children = new list().fromArray(node.children);
	                    }
	                }
	            });

	            return ast;
	        },
	        toPlainObject: function(ast) {
	            walk(ast, {
	                leave: function(node) {
	                    if (node.children && node.children instanceof list) {
	                        node.children = node.children.toArray();
	                    }
	                }
	            });

	            return ast;
	        }
	    };
	};

	var hasOwnProperty$4 = Object.prototype.hasOwnProperty;
	var noop$4 = function() {};

	function ensureFunction$1(value) {
	    return typeof value === 'function' ? value : noop$4;
	}

	function invokeForType(fn, type) {
	    return function(node, item, list) {
	        if (node.type === type) {
	            fn.call(this, node, item, list);
	        }
	    };
	}

	function getWalkersFromStructure(name, nodeType) {
	    var structure = nodeType.structure;
	    var walkers = [];

	    for (var key in structure) {
	        if (hasOwnProperty$4.call(structure, key) === false) {
	            continue;
	        }

	        var fieldTypes = structure[key];
	        var walker = {
	            name: key,
	            type: false,
	            nullable: false
	        };

	        if (!Array.isArray(structure[key])) {
	            fieldTypes = [structure[key]];
	        }

	        for (var i = 0; i < fieldTypes.length; i++) {
	            var fieldType = fieldTypes[i];
	            if (fieldType === null) {
	                walker.nullable = true;
	            } else if (typeof fieldType === 'string') {
	                walker.type = 'node';
	            } else if (Array.isArray(fieldType)) {
	                walker.type = 'list';
	            }
	        }

	        if (walker.type) {
	            walkers.push(walker);
	        }
	    }

	    if (walkers.length) {
	        return {
	            context: nodeType.walkContext,
	            fields: walkers
	        };
	    }

	    return null;
	}

	function getTypesFromConfig(config) {
	    var types = {};

	    for (var name in config.node) {
	        if (hasOwnProperty$4.call(config.node, name)) {
	            var nodeType = config.node[name];

	            if (!nodeType.structure) {
	                throw new Error('Missed `structure` field in `' + name + '` node type definition');
	            }

	            types[name] = getWalkersFromStructure(name, nodeType);
	        }
	    }

	    return types;
	}

	function createTypeIterator(config, reverse) {
	    var fields = reverse ? config.fields.slice().reverse() : config.fields;
	    var body = fields.map(function(field) {
	        var ref = 'node.' + field.name;
	        var line;

	        if (field.type === 'list') {
	            line = reverse
	                ? ref + '.forEachRight(walk);'
	                : ref + '.forEach(walk);';
	        } else {
	            line = 'walk(' + ref + ');';
	        }

	        if (field.nullable) {
	            line = 'if (' + ref + ') {\n    ' + line + '}';
	        }

	        return line;
	    });

	    if (config.context) {
	        body = [].concat(
	            'var old = context.' + config.context + ';',
	            'context.' + config.context + ' = node;',
	            body,
	            'context.' + config.context + ' = old;'
	        );
	    }

	    return new Function('node', 'context', 'walk', body.join('\n'));
	}

	function createFastTraveralMap(iterators) {
	    return {
	        Atrule: {
	            StyleSheet: iterators.StyleSheet,
	            Atrule: iterators.Atrule,
	            Rule: iterators.Rule,
	            Block: iterators.Block
	        },
	        Rule: {
	            StyleSheet: iterators.StyleSheet,
	            Atrule: iterators.Atrule,
	            Rule: iterators.Rule,
	            Block: iterators.Block
	        },
	        Declaration: {
	            StyleSheet: iterators.StyleSheet,
	            Atrule: iterators.Atrule,
	            Rule: iterators.Rule,
	            Block: iterators.Block
	        }
	    };
	}

	var create$4 = function createWalker(config) {
	    var types = getTypesFromConfig(config);
	    var iteratorsNatural = {};
	    var iteratorsReverse = {};

	    for (var name in types) {
	        if (hasOwnProperty$4.call(types, name) && types[name] !== null) {
	            iteratorsNatural[name] = createTypeIterator(types[name], false);
	            iteratorsReverse[name] = createTypeIterator(types[name], true);
	        }
	    }

	    var fastTraversalIteratorsNatural = createFastTraveralMap(iteratorsNatural);
	    var fastTraversalIteratorsReverse = createFastTraveralMap(iteratorsReverse);

	    return function walk(root, options) {
	        function walkNode(node, item, list) {
	            enter.call(context, node, item, list);

	            if (iterators.hasOwnProperty(node.type)) {
	                iterators[node.type](node, context, walkNode);
	            }

	            leave.call(context, node, item, list);
	        }

	        var enter = noop$4;
	        var leave = noop$4;
	        var iterators = iteratorsNatural;
	        var context = {
	            root: root,
	            stylesheet: null,
	            atrule: null,
	            atrulePrelude: null,
	            rule: null,
	            selector: null,
	            block: null,
	            declaration: null,
	            function: null
	        };

	        if (typeof options === 'function') {
	            enter = options;
	        } else if (options) {
	            enter = ensureFunction$1(options.enter);
	            leave = ensureFunction$1(options.leave);

	            if (options.reverse) {
	                iterators = iteratorsReverse;
	            }

	            if (options.visit) {
	                if (fastTraversalIteratorsNatural.hasOwnProperty(options.visit)) {
	                    iterators = options.reverse
	                        ? fastTraversalIteratorsReverse[options.visit]
	                        : fastTraversalIteratorsNatural[options.visit];
	                } else if (!types.hasOwnProperty(options.visit)) {
	                    throw new Error('Bad value `' + options.visit + '` for `visit` option (should be: ' + Object.keys(types).join(', ') + ')');
	                }

	                enter = invokeForType(enter, options.visit);
	                leave = invokeForType(leave, options.visit);
	            }
	        }

	        if (enter === noop$4 && leave === noop$4) {
	            throw new Error('Neither `enter` nor `leave` walker handler is set or both aren\'t a function');
	        }

	        // swap handlers in reverse mode to invert visit order
	        if (options.reverse) {
	            var tmp = enter;
	            enter = leave;
	            leave = tmp;
	        }

	        walkNode(root);
	    };
	};

	var clone = function clone(node) {
	    var result = {};

	    for (var key in node) {
	        var value = node[key];

	        if (value) {
	            if (Array.isArray(value) || value instanceof list) {
	                value = value.map(clone);
	            } else if (value.constructor === Object) {
	                value = clone(value);
	            }
	        }

	        result[key] = value;
	    }

	    return result;
	};

	var hasOwnProperty$5 = Object.prototype.hasOwnProperty;
	var shape = {
	    generic: true,
	    types: {},
	    properties: {},
	    parseContext: {},
	    scope: {},
	    atrule: ['parse'],
	    pseudo: ['parse'],
	    node: ['name', 'structure', 'parse', 'generate', 'walkContext']
	};

	function isObject(value) {
	    return value && value.constructor === Object;
	}

	function copy(value) {
	    if (isObject(value)) {
	        var res = {};
	        for (var key in value) {
	            if (hasOwnProperty$5.call(value, key)) {
	                res[key] = value[key];
	            }
	        }
	        return res;
	    } else {
	        return value;
	    }
	}

	function extend(dest, src) {
	    for (var key in src) {
	        if (hasOwnProperty$5.call(src, key)) {
	            if (isObject(dest[key])) {
	                extend(dest[key], copy(src[key]));
	            } else {
	                dest[key] = copy(src[key]);
	            }
	        }
	    }
	}

	function mix(dest, src, shape) {
	    for (var key in shape) {
	        if (hasOwnProperty$5.call(shape, key) === false) {
	            continue;
	        }

	        if (shape[key] === true) {
	            if (key in src) {
	                if (hasOwnProperty$5.call(src, key)) {
	                    dest[key] = copy(src[key]);
	                }
	            }
	        } else if (shape[key]) {
	            if (isObject(shape[key])) {
	                var res = {};
	                extend(res, dest[key]);
	                extend(res, src[key]);
	                dest[key] = res;
	            } else if (Array.isArray(shape[key])) {
	                var res = {};
	                var innerShape = shape[key].reduce(function(s, k) {
	                    s[k] = true;
	                    return s;
	                }, {});
	                for (var name in dest[key]) {
	                    if (hasOwnProperty$5.call(dest[key], name)) {
	                        res[name] = {};
	                        if (dest[key] && dest[key][name]) {
	                            mix(res[name], dest[key][name], innerShape);
	                        }
	                    }
	                }
	                for (var name in src[key]) {
	                    if (hasOwnProperty$5.call(src[key], name)) {
	                        if (!res[name]) {
	                            res[name] = {};
	                        }
	                        if (src[key] && src[key][name]) {
	                            mix(res[name], src[key][name], innerShape);
	                        }
	                    }
	                }
	                dest[key] = res;
	            }
	        }
	    }
	    return dest;
	}

	var mix_1 = function(dest, src) {
	    return mix(dest, src, shape);
	};

	function assign$1(dest, src) {
	    for (var key in src) {
	        dest[key] = src[key];
	    }

	    return dest;
	}

	function createSyntax(config) {
	    var parse = create$1(config);
	    var walk = create$4(config);
	    var generate = create$2(config);
	    var convert = create$3(walk);

	    var syntax = {
	        List: list,
	        Tokenizer: tokenizer,
	        Lexer: Lexer_1,

	        vendorPrefix: names.vendorPrefix,
	        keyword: names.keyword,
	        property: names.property,
	        isCustomProperty: names.isCustomProperty,

	        grammar: grammar,
	        lexer: null,
	        createLexer: function(config) {
	            return new Lexer_1(config, syntax, syntax.lexer.structure);
	        },

	        parse: parse,
	        walk: walk,
	        generate: generate,

	        clone: clone,
	        fromPlainObject: convert.fromPlainObject,
	        toPlainObject: convert.toPlainObject,

	        createSyntax: function(config) {
	            return createSyntax(mix_1({}, config));
	        },
	        fork: function(extension) {
	            var base = mix_1({}, config); // copy of config
	            return createSyntax(
	                typeof extension === 'function'
	                    ? extension(base, assign$1)
	                    : mix_1(base, extension)
	            );
	        }
	    };

	    syntax.lexer = new Lexer_1({
	        generic: true,
	        types: config.types,
	        properties: config.properties,
	        node: config.node
	    }, syntax);

	    return syntax;
	}
	var create_1 = function(config) {
	    return createSyntax(mix_1({}, config));
	};

	var create$5 = {
		create: create_1
	};

	var all = {
		syntax: "initial | inherit | unset | revert",
		media: "noPracticalMedia",
		inherited: false,
		animationType: "eachOfShorthandPropertiesExceptUnicodeBiDiAndDirection",
		percentages: "no",
		groups: [
			"CSS Miscellaneous"
		],
		initial: "noPracticalInitialValue",
		appliesto: "allElements",
		computed: "asSpecifiedAppliesToEachProperty",
		order: "uniqueOrder",
		status: "standard"
	};
	var animation = {
		syntax: "<single-animation>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: [
			"animation-name",
			"animation-duration",
			"animation-timing-function",
			"animation-delay",
			"animation-iteration-count",
			"animation-direction",
			"animation-fill-mode",
			"animation-play-state"
		],
		appliesto: "allElementsAndPseudos",
		computed: [
			"animation-name",
			"animation-duration",
			"animation-timing-function",
			"animation-delay",
			"animation-direction",
			"animation-iteration-count",
			"animation-fill-mode",
			"animation-play-state"
		],
		order: "orderOfAppearance",
		status: "standard"
	};
	var appearance = {
		syntax: "auto | none",
		media: "all",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	};
	var azimuth = {
		syntax: "<angle> | [ [ left-side | far-left | left | center-left | center | center-right | right | far-right | right-side ] || behind ] | leftwards | rightwards",
		media: "aural",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Speech"
		],
		initial: "center",
		appliesto: "allElements",
		computed: "normalizedAngle",
		order: "orderOfAppearance",
		status: "obsolete"
	};
	var background = {
		syntax: "[ <bg-layer> , ]* <final-bg-layer>",
		media: "visual",
		inherited: false,
		animationType: [
			"background-color",
			"background-image",
			"background-clip",
			"background-position",
			"background-size",
			"background-repeat",
			"background-attachment"
		],
		percentages: [
			"background-position",
			"background-size"
		],
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"background-image",
			"background-position",
			"background-size",
			"background-repeat",
			"background-origin",
			"background-clip",
			"background-attachment",
			"background-color"
		],
		appliesto: "allElements",
		computed: [
			"background-image",
			"background-position",
			"background-size",
			"background-repeat",
			"background-origin",
			"background-clip",
			"background-attachment",
			"background-color"
		],
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	};
	var border = {
		syntax: "<br-width> || <br-style> || <color>",
		media: "visual",
		inherited: false,
		animationType: [
			"border-color",
			"border-style",
			"border-width"
		],
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-width",
			"border-style",
			"border-color"
		],
		appliesto: "allElements",
		computed: [
			"border-width",
			"border-style",
			"border-color"
		],
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	};
	var bottom = {
		syntax: "<length> | <percentage> | auto",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToContainingBlockHeight",
		groups: [
			"CSS Positioning"
		],
		initial: "auto",
		appliesto: "positionedElements",
		computed: "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
		order: "uniqueOrder",
		status: "standard"
	};
	var clear = {
		syntax: "none | left | right | both | inline-start | inline-end",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Positioning"
		],
		initial: "none",
		appliesto: "blockLevelElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var clip = {
		syntax: "<shape> | auto",
		media: "visual",
		inherited: false,
		animationType: "rectangle",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "auto",
		appliesto: "absolutelyPositionedElements",
		computed: "autoOrRectangle",
		order: "uniqueOrder",
		status: "standard"
	};
	var color = {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Color"
		],
		initial: "variesFromBrowserToBrowser",
		appliesto: "allElements",
		computed: "translucentValuesRGBAOtherwiseRGB",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	};
	var columns = {
		syntax: "<'column-width'> || <'column-count'>",
		media: "visual",
		inherited: false,
		animationType: [
			"column-width",
			"column-count"
		],
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: [
			"column-width",
			"column-count"
		],
		appliesto: "blockContainersExceptTableWrappers",
		computed: [
			"column-width",
			"column-count"
		],
		order: "perGrammar",
		status: "standard"
	};
	var contain = {
		syntax: "none | strict | content | [ size || layout || style || paint ]",
		media: "all",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Containment"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	};
	var content = {
		syntax: "normal | none | [ <content-replacement> | <content-list> ] [/ <string> ]?",
		media: "all",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Generated Content"
		],
		initial: "normal",
		appliesto: "beforeAndAfterPseudos",
		computed: "normalOnElementsForPseudosNoneAbsoluteURIStringOrAsSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var cursor = {
		syntax: "[ [ <url> [ <x> <y> ]? , ]* [ auto | default | none | context-menu | help | pointer | progress | wait | cell | crosshair | text | vertical-text | alias | copy | move | no-drop | not-allowed | e-resize | n-resize | ne-resize | nw-resize | s-resize | se-resize | sw-resize | w-resize | ew-resize | ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | all-scroll | zoom-in | zoom-out | grab | grabbing ] ]",
		media: [
			"visual",
			"interactive"
		],
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecifiedURLsAbsolute",
		order: "uniqueOrder",
		status: "standard"
	};
	var direction = {
		syntax: "ltr | rtl",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Writing Modes"
		],
		initial: "ltr",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var display = {
		syntax: "[ <display-outside> || <display-inside> ] | <display-listitem> | <display-internal> | <display-box> | <display-legacy>",
		media: "all",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Display"
		],
		initial: "inline",
		appliesto: "allElements",
		computed: "asSpecifiedExceptPositionedFloatingAndRootElementsKeywordMaybeDifferent",
		order: "uniqueOrder",
		status: "standard"
	};
	var filter = {
		syntax: "none | <filter-function-list>",
		media: "visual",
		inherited: false,
		animationType: "filterList",
		percentages: "no",
		groups: [
			"Filter Effects"
		],
		initial: "none",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var flex = {
		syntax: "none | [ <'flex-grow'> <'flex-shrink'>? || <'flex-basis'> ]",
		media: "visual",
		inherited: false,
		animationType: [
			"flex-grow",
			"flex-shrink",
			"flex-basis"
		],
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: [
			"flex-grow",
			"flex-shrink",
			"flex-basis"
		],
		appliesto: "flexItemsAndInFlowPseudos",
		computed: [
			"flex-grow",
			"flex-shrink",
			"flex-basis"
		],
		order: "orderOfAppearance",
		status: "standard"
	};
	var float = {
		syntax: "left | right | none | inline-start | inline-end",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Positioning"
		],
		initial: "none",
		appliesto: "allElementsNoEffectIfDisplayNone",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var font = {
		syntax: "[ [ <'font-style'> || <font-variant-css21> || <'font-weight'> || <'font-stretch'> ]? <'font-size'> [ / <'line-height'> ]? <'font-family'> ] | caption | icon | menu | message-box | small-caption | status-bar",
		media: "visual",
		inherited: true,
		animationType: [
			"font-style",
			"font-variant",
			"font-weight",
			"font-stretch",
			"font-size",
			"line-height",
			"font-family"
		],
		percentages: [
			"font-size",
			"line-height"
		],
		groups: [
			"CSS Fonts"
		],
		initial: [
			"font-style",
			"font-variant",
			"font-weight",
			"font-stretch",
			"font-size",
			"line-height",
			"font-family"
		],
		appliesto: "allElements",
		computed: [
			"font-style",
			"font-variant",
			"font-weight",
			"font-stretch",
			"font-size",
			"line-height",
			"font-family"
		],
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	};
	var gap = {
		syntax: "<'row-gap'> <'column-gap'>?",
		media: "visual",
		inherited: false,
		animationType: [
			"row-gap",
			"column-gap"
		],
		percentages: "no",
		groups: [
			"CSS Box Alignment"
		],
		initial: [
			"row-gap",
			"column-gap"
		],
		appliesto: "gridContainers",
		computed: [
			"row-gap",
			"column-gap"
		],
		order: "uniqueOrder",
		status: "standard"
	};
	var grid = {
		syntax: "<'grid-template'> | <'grid-template-rows'> / [ auto-flow && dense? ] <'grid-auto-columns'>? | [ auto-flow && dense? ] <'grid-auto-rows'>? / <'grid-template-columns'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: [
			"grid-template-rows",
			"grid-template-columns",
			"grid-auto-rows",
			"grid-auto-columns"
		],
		groups: [
			"CSS Grid Layout"
		],
		initial: [
			"grid-template-rows",
			"grid-template-columns",
			"grid-template-areas",
			"grid-auto-rows",
			"grid-auto-columns",
			"grid-auto-flow",
			"grid-column-gap",
			"grid-row-gap",
			"column-gap",
			"row-gap"
		],
		appliesto: "gridContainers",
		computed: [
			"grid-template-rows",
			"grid-template-columns",
			"grid-template-areas",
			"grid-auto-rows",
			"grid-auto-columns",
			"grid-auto-flow",
			"grid-column-gap",
			"grid-row-gap",
			"column-gap",
			"row-gap"
		],
		order: "uniqueOrder",
		status: "standard"
	};
	var height = {
		syntax: "[ <length> | <percentage> ] && [ border-box | content-box ]? | available | min-content | max-content | fit-content | auto",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "regardingHeightOfGeneratedBoxContainingBlockPercentagesRelativeToContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "auto",
		appliesto: "allElementsButNonReplacedAndTableColumns",
		computed: "percentageAutoOrAbsoluteLength",
		order: "uniqueOrder",
		status: "standard"
	};
	var hyphens = {
		syntax: "none | manual | auto",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "manual",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var isolation = {
		syntax: "auto | isolate",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Compositing and Blending"
		],
		initial: "auto",
		appliesto: "allElementsSVGContainerGraphicsAndGraphicsReferencingElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var left = {
		syntax: "<length> | <percentage> | auto",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Positioning"
		],
		initial: "auto",
		appliesto: "positionedElements",
		computed: "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
		order: "uniqueOrder",
		status: "standard"
	};
	var margin = {
		syntax: "[ <length> | <percentage> | auto ]{1,4}",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: [
			"margin-bottom",
			"margin-left",
			"margin-right",
			"margin-top"
		],
		appliesto: "allElementsExceptTableDisplayTypes",
		computed: [
			"margin-bottom",
			"margin-left",
			"margin-right",
			"margin-top"
		],
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	};
	var mask = {
		syntax: "<mask-layer>#",
		media: "visual",
		inherited: false,
		animationType: [
			"mask-image",
			"mask-mode",
			"mask-repeat",
			"mask-position",
			"mask-clip",
			"mask-origin",
			"mask-size",
			"mask-composite"
		],
		percentages: [
			"mask-position"
		],
		groups: [
			"CSS Masking"
		],
		initial: [
			"mask-image",
			"mask-mode",
			"mask-repeat",
			"mask-position",
			"mask-clip",
			"mask-origin",
			"mask-size",
			"mask-composite"
		],
		appliesto: "allElementsSVGContainerElements",
		computed: [
			"mask-image",
			"mask-mode",
			"mask-repeat",
			"mask-position",
			"mask-clip",
			"mask-origin",
			"mask-size",
			"mask-composite"
		],
		order: "perGrammar",
		stacking: true,
		status: "standard"
	};
	var offset = {
		syntax: "[ <'offset-position'>? [ <'offset-path'> [ <'offset-distance'> || <'offset-rotate'> ]? ]? ]! [ / <'offset-anchor'> ]?",
		media: "visual",
		inherited: false,
		animationType: [
			"offset-position",
			"offset-path",
			"offset-distance",
			"offset-anchor",
			"offset-rotate"
		],
		percentages: [
			"offset-position",
			"offset-distance",
			"offset-anchor"
		],
		groups: [
			"CSS Motion"
		],
		initial: [
			"offset-position",
			"offset-path",
			"offset-distance",
			"offset-anchor",
			"offset-rotate"
		],
		appliesto: "transformableElements",
		computed: [
			"offset-position",
			"offset-path",
			"offset-distance",
			"offset-anchor",
			"offset-rotate"
		],
		order: "perGrammar",
		stacking: true,
		status: "experimental"
	};
	var opacity = {
		syntax: "<number>",
		media: "visual",
		inherited: false,
		animationType: "number",
		percentages: "no",
		groups: [
			"CSS Color"
		],
		initial: "1.0",
		appliesto: "allElements",
		computed: "specifiedValueClipped0To1",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::placeholder"
		],
		status: "standard"
	};
	var order = {
		syntax: "<integer>",
		media: "visual",
		inherited: false,
		animationType: "integer",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "0",
		appliesto: "flexItemsAndAbsolutelyPositionedFlexContainerChildren",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var orphans = {
		syntax: "<integer>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fragmentation"
		],
		initial: "2",
		appliesto: "blockContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	};
	var outline = {
		syntax: "[ <'outline-color'> || <'outline-style'> || <'outline-width'> ]",
		media: [
			"visual",
			"interactive"
		],
		inherited: false,
		animationType: [
			"outline-color",
			"outline-width",
			"outline-style"
		],
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: [
			"outline-color",
			"outline-style",
			"outline-width"
		],
		appliesto: "allElements",
		computed: [
			"outline-color",
			"outline-width",
			"outline-style"
		],
		order: "orderOfAppearance",
		status: "standard"
	};
	var overflow = {
		syntax: "[ visible | hidden | clip | scroll | auto ]{1,2}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Overflow"
		],
		initial: "visible",
		appliesto: "blockContainersFlexContainersGridContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var padding = {
		syntax: "[ <length> | <percentage> ]{1,4}",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: [
			"padding-bottom",
			"padding-left",
			"padding-right",
			"padding-top"
		],
		appliesto: "allElementsExceptInternalTableDisplayTypes",
		computed: [
			"padding-bottom",
			"padding-left",
			"padding-right",
			"padding-top"
		],
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	};
	var perspective = {
		syntax: "none | <length>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Transforms"
		],
		initial: "none",
		appliesto: "transformableElements",
		computed: "absoluteLengthOrNone",
		order: "uniqueOrder",
		stacking: true,
		status: "standard"
	};
	var position = {
		syntax: "static | relative | absolute | sticky | fixed",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Positioning"
		],
		initial: "static",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		stacking: true,
		status: "standard"
	};
	var quotes = {
		syntax: "none | [ <string> <string> ]+",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Generated Content"
		],
		initial: "dependsOnUserAgent",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var resize = {
		syntax: "none | both | horizontal | vertical",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: "none",
		appliesto: "elementsWithOverflowNotVisibleAndReplacedElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var right = {
		syntax: "<length> | <percentage> | auto",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Positioning"
		],
		initial: "auto",
		appliesto: "positionedElements",
		computed: "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
		order: "uniqueOrder",
		status: "standard"
	};
	var rotate = {
		syntax: "none | [ x | y | z | <number>{3} ]? && <angle>",
		media: "visual",
		inherited: false,
		animationType: "transform",
		percentages: "no",
		groups: [
			"CSS Transforms"
		],
		initial: "none",
		appliesto: "transformableElements",
		computed: "asSpecified",
		order: "perGrammar",
		stacking: true,
		status: "standard"
	};
	var scale = {
		syntax: "none | <number>{1,3}",
		media: "visual",
		inherited: false,
		animationType: "transform",
		percentages: "no",
		groups: [
			"CSS Transforms"
		],
		initial: "none",
		appliesto: "transformableElements",
		computed: "asSpecified",
		order: "perGrammar",
		stacking: true,
		status: "standard"
	};
	var top = {
		syntax: "<length> | <percentage> | auto",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToContainingBlockHeight",
		groups: [
			"CSS Positioning"
		],
		initial: "auto",
		appliesto: "positionedElements",
		computed: "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
		order: "uniqueOrder",
		status: "standard"
	};
	var transform = {
		syntax: "none | <transform-list>",
		media: "visual",
		inherited: false,
		animationType: "transform",
		percentages: "referToSizeOfBoundingBox",
		groups: [
			"CSS Transforms"
		],
		initial: "none",
		appliesto: "transformableElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		stacking: true,
		status: "standard"
	};
	var transition = {
		syntax: "<single-transition>#",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Transitions"
		],
		initial: [
			"transition-delay",
			"transition-duration",
			"transition-property",
			"transition-timing-function"
		],
		appliesto: "allElementsAndPseudos",
		computed: [
			"transition-delay",
			"transition-duration",
			"transition-property",
			"transition-timing-function"
		],
		order: "orderOfAppearance",
		status: "standard"
	};
	var translate = {
		syntax: "none | <length-percentage> [ <length-percentage> <length>? ]?",
		media: "visual",
		inherited: false,
		animationType: "transform",
		percentages: "referToSizeOfBoundingBox",
		groups: [
			"CSS Transforms"
		],
		initial: "none",
		appliesto: "transformableElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "perGrammar",
		stacking: true,
		status: "standard"
	};
	var visibility = {
		syntax: "visible | hidden | collapse",
		media: "visual",
		inherited: true,
		animationType: "visibility",
		percentages: "no",
		groups: [
			"CSS Box Model"
		],
		initial: "visible",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	};
	var widows = {
		syntax: "<integer>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fragmentation"
		],
		initial: "2",
		appliesto: "blockContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	};
	var width = {
		syntax: "[ <length> | <percentage> ] && [ border-box | content-box ]? | available | min-content | max-content | fit-content | auto",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "auto",
		appliesto: "allElementsButNonReplacedAndTableRows",
		computed: "percentageAutoOrAbsoluteLength",
		order: "lengthOrPercentageBeforeKeywordIfBothPresent",
		status: "standard"
	};
	var zoom = {
		syntax: "normal | reset | <number> | <percentage>",
		media: "visual",
		inherited: false,
		animationType: "integer",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	};
	var properties$1 = {
		"--*": {
		syntax: "<declaration-value>",
		media: "all",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Variables"
		],
		initial: "seeProse",
		appliesto: "allElements",
		computed: "asSpecifiedWithVarsSubstituted",
		order: "perGrammar",
		status: "experimental"
	},
		"-ms-accelerator": {
		syntax: "false | true",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "false",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-block-progression": {
		syntax: "tb | rl | bt | lr",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "tb",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-content-zoom-chaining": {
		syntax: "none | chained",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "none",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-content-zooming": {
		syntax: "none | zoom",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "zoomForTheTopLevelNoneForTheRest",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-content-zoom-limit": {
		syntax: "<'-ms-content-zoom-limit-min'> <'-ms-content-zoom-limit-max'>",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: [
			"-ms-content-zoom-limit-max",
			"-ms-content-zoom-limit-min"
		],
		groups: [
			"Microsoft Extensions"
		],
		initial: [
			"-ms-content-zoom-limit-max",
			"-ms-content-zoom-limit-min"
		],
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: [
			"-ms-content-zoom-limit-max",
			"-ms-content-zoom-limit-min"
		],
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-content-zoom-limit-max": {
		syntax: "<percentage>",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "maxZoomFactor",
		groups: [
			"Microsoft Extensions"
		],
		initial: "400%",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-content-zoom-limit-min": {
		syntax: "<percentage>",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "minZoomFactor",
		groups: [
			"Microsoft Extensions"
		],
		initial: "100%",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-content-zoom-snap": {
		syntax: "<'-ms-content-zoom-snap-type'> || <'-ms-content-zoom-snap-points'>",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: [
			"-ms-content-zoom-snap-type",
			"-ms-content-zoom-snap-points"
		],
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: [
			"-ms-content-zoom-snap-type",
			"-ms-content-zoom-snap-points"
		],
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-content-zoom-snap-points": {
		syntax: "snapInterval( <percentage>, <percentage> ) | snapList( <percentage># )",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "snapInterval(0%, 100%)",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-content-zoom-snap-type": {
		syntax: "none | proximity | mandatory",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "none",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-filter": {
		syntax: "<string>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "\"\"",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-flow-from": {
		syntax: "[ none | <custom-ident> ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "none",
		appliesto: "nonReplacedElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-flow-into": {
		syntax: "[ none | <custom-ident> ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "none",
		appliesto: "iframeElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-high-contrast-adjust": {
		syntax: "auto | none",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-hyphenate-limit-chars": {
		syntax: "auto | <integer>{1,3}",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-hyphenate-limit-lines": {
		syntax: "no-limit | <integer>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "no-limit",
		appliesto: "blockContainerElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-hyphenate-limit-zone": {
		syntax: "<percentage> | <length>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "referToLineBoxWidth",
		groups: [
			"Microsoft Extensions"
		],
		initial: "0",
		appliesto: "blockContainerElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-ime-align": {
		syntax: "auto | after",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-overflow-style": {
		syntax: "auto | none | scrollbar | -ms-autohiding-scrollbar",
		media: "interactive",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "auto",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-scrollbar-3dlight-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "dependsOnUserAgent",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-scrollbar-arrow-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "ButtonText",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-scrollbar-base-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "dependsOnUserAgent",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-scrollbar-darkshadow-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "ThreeDDarkShadow",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-scrollbar-face-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "ThreeDFace",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-scrollbar-highlight-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "ThreeDHighlight",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-scrollbar-shadow-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Microsoft Extensions"
		],
		initial: "ThreeDDarkShadow",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-ms-scrollbar-track-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
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		order: "uniqueOrder",
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		appliesto: "nonReplacedBlockAndInlineBlockElements",
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			"-ms-scroll-limit-y-max"
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		appliesto: "nonReplacedBlockAndInlineBlockElements",
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			"-ms-scroll-limit-y-min",
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			"-ms-scroll-limit-y-max"
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		order: "uniqueOrder",
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		order: "uniqueOrder",
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		computed: "asSpecified",
		order: "uniqueOrder",
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			"-ms-scroll-snap-type",
			"-ms-scroll-snap-points-x"
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			"-ms-scroll-snap-type",
			"-ms-scroll-snap-points-y"
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		status: "nonstandard"
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			"Microsoft Extensions"
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
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		order: "uniqueOrder",
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		computed: "asSpecified",
		order: "uniqueOrder",
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		order: "uniqueOrder",
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		appliesto: "blockLevelElements",
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		order: "uniqueOrder",
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		appliesto: "exclusionElements",
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		order: "uniqueOrder",
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		order: "uniqueOrder",
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			"WebKit Extensions"
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		computed: "asSpecified",
		order: "uniqueOrder",
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
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		order: "uniqueOrder",
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		order: "uniqueOrder",
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		order: "uniqueOrder",
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		appliesto: "images",
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		order: "uniqueOrder",
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		appliesto: "xulImageElements",
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		order: "uniqueOrder",
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		appliesto: "anyElementEffectOnProgressAndMeter",
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		order: "uniqueOrder",
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			"-moz-outline-radius-topright",
			"-moz-outline-radius-bottomright",
			"-moz-outline-radius-bottomleft"
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			"-moz-outline-radius-bottomright",
			"-moz-outline-radius-bottomleft"
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		initial: [
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			"-moz-outline-radius-topright",
			"-moz-outline-radius-bottomright",
			"-moz-outline-radius-bottomleft"
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		appliesto: "allElements",
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			"-moz-outline-radius-bottomleft"
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		computed: "asSpecified",
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		percentages: "no",
		groups: [
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		percentages: "no",
		groups: [
			"Mozilla Extensions"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		groups: [
			"Mozilla Extensions"
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		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		media: "interactive",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions"
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		initial: "read-only",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		syntax: "drag | no-drag",
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		animationType: "discrete",
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		groups: [
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		initial: "drag",
		appliesto: "allElementsCreatingNativeWindows",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		syntax: "default | menu | tooltip | sheet | none",
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		animationType: "discrete",
		percentages: "no",
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		initial: "default",
		appliesto: "allElementsCreatingNativeWindows",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		media: "visual",
		inherited: false,
		animationType: "discrete",
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		initial: "noneButOverriddenInUserAgentCSS",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		groups: [
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		initial: [
			"border-width",
			"border-style",
			"color"
		],
		appliesto: "allElements",
		computed: [
			"border-width",
			"border-style",
			"color"
		],
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-border-before-color": {
		syntax: "<'color'>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-border-before-style": {
		syntax: "<'border-style'>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-border-before-width": {
		syntax: "<'border-width'>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"WebKit Extensions"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthZeroIfBorderStyleNoneOrHidden",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-box-reflect": {
		syntax: "[ above | below | right | left ]? <length>? <image>?",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-mask": {
		syntax: "[ <mask-reference> || <position> [ / <bg-size> ]? || <repeat-style> || [ <box> | border | padding | content | text ] || [ <box> | border | padding | content ] ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: [
			"-webkit-mask-image",
			"-webkit-mask-repeat",
			"-webkit-mask-attachment",
			"-webkit-mask-position",
			"-webkit-mask-origin",
			"-webkit-mask-clip"
		],
		appliesto: "allElements",
		computed: [
			"-webkit-mask-image",
			"-webkit-mask-repeat",
			"-webkit-mask-attachment",
			"-webkit-mask-position",
			"-webkit-mask-origin",
			"-webkit-mask-clip"
		],
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-mask-attachment": {
		syntax: "<attachment>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "scroll",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-clip": {
		syntax: "[ <box> | border | padding | content | text ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "border",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-composite": {
		syntax: "<composite-style>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "source-over",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-image": {
		syntax: "<mask-reference>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "absoluteURIOrNone",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-origin": {
		syntax: "[ <box> | border | padding | content ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "padding",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-position": {
		syntax: "<position>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToSizeOfElement",
		groups: [
			"WebKit Extensions"
		],
		initial: "0% 0%",
		appliesto: "allElements",
		computed: "absoluteLengthOrPercentage",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-position-x": {
		syntax: "[ <length-percentage> | left | center | right ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToSizeOfElement",
		groups: [
			"WebKit Extensions"
		],
		initial: "0%",
		appliesto: "allElements",
		computed: "absoluteLengthOrPercentage",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-position-y": {
		syntax: "[ <length-percentage> | top | center | bottom ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToSizeOfElement",
		groups: [
			"WebKit Extensions"
		],
		initial: "0%",
		appliesto: "allElements",
		computed: "absoluteLengthOrPercentage",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-repeat": {
		syntax: "<repeat-style>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "repeat",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-repeat-x": {
		syntax: "repeat | no-repeat | space | round",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "repeat",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-repeat-y": {
		syntax: "repeat | no-repeat | space | round",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "repeat",
		appliesto: "allElements",
		computed: "absoluteLengthOrPercentage",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-mask-size": {
		syntax: "<bg-size>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "relativeToBackgroundPositioningArea",
		groups: [
			"WebKit Extensions"
		],
		initial: "auto auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-overflow-scrolling": {
		syntax: "auto | touch",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "auto",
		appliesto: "scrollingBoxes",
		computed: "asSpecified",
		order: "orderOfAppearance",
		status: "nonstandard"
	},
		"-webkit-tap-highlight-color": {
		syntax: "<color>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "black",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-text-fill-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "color",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-text-stroke": {
		syntax: "<length> || <color>",
		media: "visual",
		inherited: true,
		animationType: [
			"-webkit-text-stroke-width",
			"-webkit-text-stroke-color"
		],
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: [
			"-webkit-text-stroke-width",
			"-webkit-text-stroke-color"
		],
		appliesto: "allElements",
		computed: [
			"-webkit-text-stroke-width",
			"-webkit-text-stroke-color"
		],
		order: "canonicalOrder",
		status: "nonstandard"
	},
		"-webkit-text-stroke-color": {
		syntax: "<color>",
		media: "visual",
		inherited: true,
		animationType: "color",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-text-stroke-width": {
		syntax: "<length>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "0",
		appliesto: "allElements",
		computed: "absoluteLength",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-touch-callout": {
		syntax: "default | none",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "default",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"-webkit-user-modify": {
		syntax: "read-only | read-write | read-write-plaintext-only",
		media: "interactive",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"WebKit Extensions"
		],
		initial: "read-only",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"align-content": {
		syntax: "normal | <baseline-position> | <content-distribution> | <overflow-position>? <content-position>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "normal",
		appliesto: "multilineFlexContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"align-items": {
		syntax: "normal | stretch | <baseline-position> | [ <overflow-position>? <self-position> ]",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"align-self": {
		syntax: "auto | normal | stretch | <baseline-position> | <overflow-position>? <self-position>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "auto",
		appliesto: "flexItemsGridItemsAndAbsolutelyPositionedBoxes",
		computed: "autoOnAbsolutelyPositionedElementsValueOfAlignItemsOnParent",
		order: "uniqueOrder",
		status: "standard"
	},
		all: all,
		animation: animation,
		"animation-delay": {
		syntax: "<time>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: "0s",
		appliesto: "allElementsAndPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"animation-direction": {
		syntax: "<single-animation-direction>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: "normal",
		appliesto: "allElementsAndPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"animation-duration": {
		syntax: "<time>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: "0s",
		appliesto: "allElementsAndPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"animation-fill-mode": {
		syntax: "<single-animation-fill-mode>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: "none",
		appliesto: "allElementsAndPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"animation-iteration-count": {
		syntax: "<single-animation-iteration-count>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: "1",
		appliesto: "allElementsAndPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"animation-name": {
		syntax: "[ none | <keyframes-name> ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: "none",
		appliesto: "allElementsAndPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"animation-play-state": {
		syntax: "<single-animation-play-state>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: "running",
		appliesto: "allElementsAndPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"animation-timing-function": {
		syntax: "<single-timing-function>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Animations"
		],
		initial: "ease",
		appliesto: "allElementsAndPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		appearance: appearance,
		azimuth: azimuth,
		"backdrop-filter": {
		syntax: "none | <filter-function-list>",
		media: "visual",
		inherited: false,
		animationType: "filterList",
		percentages: "no",
		groups: [
			"Filter Effects"
		],
		initial: "none",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "experimental"
	},
		"backface-visibility": {
		syntax: "visible | hidden",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Transforms"
		],
		initial: "visible",
		appliesto: "transformableElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		background: background,
		"background-attachment": {
		syntax: "<attachment>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "scroll",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"background-blend-mode": {
		syntax: "<blend-mode>#",
		media: "none",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Compositing and Blending"
		],
		initial: "normal",
		appliesto: "allElementsSVGContainerGraphicsAndGraphicsReferencingElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"background-clip": {
		syntax: "<box>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "border-box",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"background-color": {
		syntax: "<color>",
		media: "visual",
		inherited: false,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "transparent",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"background-image": {
		syntax: "<bg-image>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecifiedURLsAbsolute",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"background-origin": {
		syntax: "<box>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "padding-box",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"background-position": {
		syntax: "<bg-position>#",
		media: "visual",
		inherited: false,
		animationType: "repeatableListOfSimpleListOfLpc",
		percentages: "referToSizeOfBackgroundPositioningAreaMinusBackgroundImageSize",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "0% 0%",
		appliesto: "allElements",
		computed: "listEachItemTwoKeywordsOriginOffsets",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"background-position-x": {
		syntax: "[ center | [ left | right | x-start | x-end ]? <length-percentage>? ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToWidthOfBackgroundPositioningAreaMinusBackgroundImageHeight",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "left",
		appliesto: "allElements",
		computed: "listEachItemConsistingOfAbsoluteLengthPercentageAndOrigin",
		order: "uniqueOrder",
		status: "experimental"
	},
		"background-position-y": {
		syntax: "[ center | [ top | bottom | y-start | y-end ]? <length-percentage>? ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToHeightOfBackgroundPositioningAreaMinusBackgroundImageHeight",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "top",
		appliesto: "allElements",
		computed: "listEachItemConsistingOfAbsoluteLengthPercentageAndOrigin",
		order: "uniqueOrder",
		status: "experimental"
	},
		"background-repeat": {
		syntax: "<repeat-style>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "repeat",
		appliesto: "allElements",
		computed: "listEachItemHasTwoKeywordsOnePerDimension",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"background-size": {
		syntax: "<bg-size>#",
		media: "visual",
		inherited: false,
		animationType: "repeatableListOfSimpleListOfLpc",
		percentages: "relativeToBackgroundPositioningArea",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "auto auto",
		appliesto: "allElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"block-overflow": {
		syntax: "clip | ellipsis | <string>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Overflow"
		],
		initial: "clip",
		appliesto: "blockContainers",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	},
		"block-size": {
		syntax: "<'width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "blockSizeOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "auto",
		appliesto: "sameAsWidthAndHeight",
		computed: "sameAsWidthAndHeight",
		order: "uniqueOrder",
		status: "standard"
	},
		border: border,
		"border-block-end": {
		syntax: "<'border-width'> || <'border-style'> || <'color'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: [
			"border-width",
			"border-style",
			"color"
		],
		appliesto: "allElements",
		computed: [
			"border-width",
			"border-style",
			"border-block-end-color"
		],
		order: "uniqueOrder",
		status: "standard"
	},
		"border-block-end-color": {
		syntax: "<'color'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-block-end-style": {
		syntax: "<'border-style'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-block-end-width": {
		syntax: "<'border-width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthZeroIfBorderStyleNoneOrHidden",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-block-start": {
		syntax: "<'border-width'> || <'border-style'> || <'color'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: [
			"border-width",
			"border-style",
			"color"
		],
		appliesto: "allElements",
		computed: [
			"border-width",
			"border-style",
			"border-block-start-color"
		],
		order: "uniqueOrder",
		status: "standard"
	},
		"border-block-start-color": {
		syntax: "<'color'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-block-start-style": {
		syntax: "<'border-style'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-block-start-width": {
		syntax: "<'border-width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthZeroIfBorderStyleNoneOrHidden",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-bottom": {
		syntax: "<br-width> || <br-style> || <color>",
		media: "visual",
		inherited: false,
		animationType: [
			"border-bottom-color",
			"border-bottom-style",
			"border-bottom-width"
		],
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-bottom-width",
			"border-bottom-style",
			"border-bottom-color"
		],
		appliesto: "allElements",
		computed: [
			"border-bottom-width",
			"border-bottom-style",
			"border-bottom-color"
		],
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-bottom-color": {
		syntax: "<color>",
		media: "visual",
		inherited: false,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-bottom-left-radius": {
		syntax: "<length-percentage>{1,2}",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToDimensionOfBorderBox",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "0",
		appliesto: "allElementsUAsNotRequiredWhenCollapse",
		computed: "twoAbsoluteLengthOrPercentages",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-bottom-right-radius": {
		syntax: "<length-percentage>{1,2}",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToDimensionOfBorderBox",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "0",
		appliesto: "allElementsUAsNotRequiredWhenCollapse",
		computed: "twoAbsoluteLengthOrPercentages",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-bottom-style": {
		syntax: "<br-style>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-bottom-width": {
		syntax: "<br-width>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthOr0IfBorderBottomStyleNoneOrHidden",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-collapse": {
		syntax: "collapse | separate",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Table"
		],
		initial: "separate",
		appliesto: "tableElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-color": {
		syntax: "<color>{1,4}",
		media: "visual",
		inherited: false,
		animationType: [
			"border-bottom-color",
			"border-left-color",
			"border-right-color",
			"border-top-color"
		],
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-top-color",
			"border-right-color",
			"border-bottom-color",
			"border-left-color"
		],
		appliesto: "allElements",
		computed: [
			"border-bottom-color",
			"border-left-color",
			"border-right-color",
			"border-top-color"
		],
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-image": {
		syntax: "<'border-image-source'> || <'border-image-slice'> [ / <'border-image-width'> | / <'border-image-width'>? / <'border-image-outset'> ]? || <'border-image-repeat'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: [
			"border-image-slice",
			"border-image-width"
		],
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-image-source",
			"border-image-slice",
			"border-image-width",
			"border-image-outset",
			"border-image-repeat"
		],
		appliesto: "allElementsExceptTableElementsWhenCollapse",
		computed: [
			"border-image-outset",
			"border-image-repeat",
			"border-image-slice",
			"border-image-source",
			"border-image-width"
		],
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-image-outset": {
		syntax: "[ <length> | <number> ]{1,4}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "0",
		appliesto: "allElementsExceptTableElementsWhenCollapse",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-image-repeat": {
		syntax: "[ stretch | repeat | round | space ]{1,2}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "stretch",
		appliesto: "allElementsExceptTableElementsWhenCollapse",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-image-slice": {
		syntax: "<number-percentage>{1,4} && fill?",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToSizeOfBorderImage",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "100%",
		appliesto: "allElementsExceptTableElementsWhenCollapse",
		computed: "oneToFourPercentagesOrAbsoluteLengthsPlusFill",
		order: "percentagesOrLengthsFollowedByFill",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-image-source": {
		syntax: "none | <image>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "none",
		appliesto: "allElementsExceptTableElementsWhenCollapse",
		computed: "noneOrImageWithAbsoluteURI",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-image-width": {
		syntax: "[ <length-percentage> | <number> | auto ]{1,4}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToWidthOrHeightOfBorderImageArea",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "1",
		appliesto: "allElementsExceptTableElementsWhenCollapse",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-inline-end": {
		syntax: "<'border-width'> || <'border-style'> || <'color'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: [
			"border-width",
			"border-style",
			"color"
		],
		appliesto: "allElements",
		computed: [
			"border-width",
			"border-style",
			"border-inline-end-color"
		],
		order: "uniqueOrder",
		status: "standard"
	},
		"border-inline-end-color": {
		syntax: "<'color'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-inline-end-style": {
		syntax: "<'border-style'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-inline-end-width": {
		syntax: "<'border-width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthZeroIfBorderStyleNoneOrHidden",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-inline-start": {
		syntax: "<'border-width'> || <'border-style'> || <'color'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: [
			"border-width",
			"border-style",
			"color"
		],
		appliesto: "allElements",
		computed: [
			"border-width",
			"border-style",
			"border-inline-start-color"
		],
		order: "uniqueOrder",
		status: "standard"
	},
		"border-inline-start-color": {
		syntax: "<'color'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-inline-start-style": {
		syntax: "<'border-style'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Logical Properties"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-inline-start-width": {
		syntax: "<'border-width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthZeroIfBorderStyleNoneOrHidden",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-left": {
		syntax: "<br-width> || <br-style> || <color>",
		media: "visual",
		inherited: false,
		animationType: [
			"border-left-color",
			"border-left-style",
			"border-left-width"
		],
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-left-width",
			"border-left-style",
			"border-left-color"
		],
		appliesto: "allElements",
		computed: [
			"border-left-width",
			"border-left-style",
			"border-left-color"
		],
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-left-color": {
		syntax: "<color>",
		media: "visual",
		inherited: false,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-left-style": {
		syntax: "<br-style>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-left-width": {
		syntax: "<br-width>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthOr0IfBorderLeftStyleNoneOrHidden",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-radius": {
		syntax: "<length-percentage>{1,4} [ / <length-percentage>{1,4} ]?",
		media: "visual",
		inherited: false,
		animationType: [
			"border-top-left-radius",
			"border-top-right-radius",
			"border-bottom-right-radius",
			"border-bottom-left-radius"
		],
		percentages: "referToDimensionOfBorderBox",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-top-left-radius",
			"border-top-right-radius",
			"border-bottom-right-radius",
			"border-bottom-left-radius"
		],
		appliesto: "allElementsUAsNotRequiredWhenCollapse",
		computed: [
			"border-bottom-left-radius",
			"border-bottom-right-radius",
			"border-top-left-radius",
			"border-top-right-radius"
		],
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-right": {
		syntax: "<br-width> || <br-style> || <color>",
		media: "visual",
		inherited: false,
		animationType: [
			"border-right-color",
			"border-right-style",
			"border-right-width"
		],
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-right-width",
			"border-right-style",
			"border-right-color"
		],
		appliesto: "allElements",
		computed: [
			"border-right-width",
			"border-right-style",
			"border-right-color"
		],
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-right-color": {
		syntax: "<color>",
		media: "visual",
		inherited: false,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-right-style": {
		syntax: "<br-style>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-right-width": {
		syntax: "<br-width>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthOr0IfBorderRightStyleNoneOrHidden",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-spacing": {
		syntax: "<length> <length>?",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Table"
		],
		initial: "0",
		appliesto: "tableElements",
		computed: "twoAbsoluteLengths",
		order: "uniqueOrder",
		status: "standard"
	},
		"border-style": {
		syntax: "<br-style>{1,4}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-top-style",
			"border-right-style",
			"border-bottom-style",
			"border-left-style"
		],
		appliesto: "allElements",
		computed: [
			"border-bottom-style",
			"border-left-style",
			"border-right-style",
			"border-top-style"
		],
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-top": {
		syntax: "<br-width> || <br-style> || <color>",
		media: "visual",
		inherited: false,
		animationType: [
			"border-top-color",
			"border-top-style",
			"border-top-width"
		],
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-top-width",
			"border-top-style",
			"border-top-color"
		],
		appliesto: "allElements",
		computed: [
			"border-top-width",
			"border-top-style",
			"border-top-color"
		],
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-top-color": {
		syntax: "<color>",
		media: "visual",
		inherited: false,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "currentcolor",
		appliesto: "allElements",
		computed: "computedColor",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-top-left-radius": {
		syntax: "<length-percentage>{1,2}",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToDimensionOfBorderBox",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "0",
		appliesto: "allElementsUAsNotRequiredWhenCollapse",
		computed: "twoAbsoluteLengthOrPercentages",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-top-right-radius": {
		syntax: "<length-percentage>{1,2}",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToDimensionOfBorderBox",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "0",
		appliesto: "allElementsUAsNotRequiredWhenCollapse",
		computed: "twoAbsoluteLengthOrPercentages",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-top-style": {
		syntax: "<br-style>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-top-width": {
		syntax: "<br-width>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLengthOr0IfBorderTopStyleNoneOrHidden",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"border-width": {
		syntax: "<br-width>{1,4}",
		media: "visual",
		inherited: false,
		animationType: [
			"border-bottom-width",
			"border-left-width",
			"border-right-width",
			"border-top-width"
		],
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: [
			"border-top-width",
			"border-right-width",
			"border-bottom-width",
			"border-left-width"
		],
		appliesto: "allElements",
		computed: [
			"border-bottom-width",
			"border-left-width",
			"border-right-width",
			"border-top-width"
		],
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		bottom: bottom,
		"box-align": {
		syntax: "start | center | end | baseline | stretch",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions",
			"WebKit Extensions"
		],
		initial: "stretch",
		appliesto: "elementsWithDisplayBoxOrInlineBox",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"box-decoration-break": {
		syntax: "slice | clone",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fragmentation"
		],
		initial: "slice",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"box-direction": {
		syntax: "normal | reverse | inherit",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions",
			"WebKit Extensions"
		],
		initial: "normal",
		appliesto: "elementsWithDisplayBoxOrInlineBox",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"box-flex": {
		syntax: "<number>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions",
			"WebKit Extensions"
		],
		initial: "0",
		appliesto: "directChildrenOfElementsWithDisplayMozBoxMozInlineBox",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"box-flex-group": {
		syntax: "<integer>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions",
			"WebKit Extensions"
		],
		initial: "1",
		appliesto: "inFlowChildrenOfBoxElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"box-lines": {
		syntax: "single | multiple",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions",
			"WebKit Extensions"
		],
		initial: "single",
		appliesto: "boxElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"box-ordinal-group": {
		syntax: "<integer>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions",
			"WebKit Extensions"
		],
		initial: "1",
		appliesto: "childrenOfBoxElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"box-orient": {
		syntax: "horizontal | vertical | inline-axis | block-axis | inherit",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions",
			"WebKit Extensions"
		],
		initial: "inlineAxisHorizontalInXUL",
		appliesto: "elementsWithDisplayBoxOrInlineBox",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"box-pack": {
		syntax: "start | center | end | justify",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions",
			"WebKit Extensions"
		],
		initial: "start",
		appliesto: "elementsWithDisplayMozBoxMozInlineBox",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"box-shadow": {
		syntax: "none | <shadow>#",
		media: "visual",
		inherited: false,
		animationType: "shadowList",
		percentages: "no",
		groups: [
			"CSS Backgrounds and Borders"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "absoluteLengthsSpecifiedColorAsSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"box-sizing": {
		syntax: "content-box | border-box",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: "content-box",
		appliesto: "allElementsAcceptingWidthOrHeight",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"break-after": {
		syntax: "auto | avoid | avoid-page | page | left | right | recto | verso | avoid-column | column | avoid-region | region",
		media: "paged",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fragmentation"
		],
		initial: "auto",
		appliesto: "blockLevelElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"break-before": {
		syntax: "auto | avoid | avoid-page | page | left | right | recto | verso | avoid-column | column | avoid-region | region",
		media: "paged",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fragmentation"
		],
		initial: "auto",
		appliesto: "blockLevelElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"break-inside": {
		syntax: "auto | avoid | avoid-page | avoid-column | avoid-region",
		media: "paged",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fragmentation"
		],
		initial: "auto",
		appliesto: "blockLevelElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"caption-side": {
		syntax: "top | bottom | block-start | block-end | inline-start | inline-end",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Table"
		],
		initial: "top",
		appliesto: "tableCaptionElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"caret-color": {
		syntax: "auto | <color>",
		media: "interactive",
		inherited: true,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asAutoOrColor",
		order: "perGrammar",
		status: "standard"
	},
		clear: clear,
		clip: clip,
		"clip-path": {
		syntax: "<clip-source> | [ <basic-shape> || <geometry-box> ] | none",
		media: "visual",
		inherited: false,
		animationType: "basicShapeOtherwiseNo",
		percentages: "referToReferenceBoxWhenSpecifiedOtherwiseBorderBox",
		groups: [
			"CSS Masking"
		],
		initial: "none",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecifiedURLsAbsolute",
		order: "uniqueOrder",
		status: "standard"
	},
		color: color,
		"color-adjust": {
		syntax: "economy | exact",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Color"
		],
		initial: "economy",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"column-count": {
		syntax: "<integer> | auto",
		media: "visual",
		inherited: false,
		animationType: "integer",
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: "auto",
		appliesto: "blockContainersExceptTableWrappers",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"column-fill": {
		syntax: "auto | balance | balance-all",
		media: "visualInContinuousMediaNoEffectInOverflowColumns",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: "balance",
		appliesto: "multicolElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"column-gap": {
		syntax: "normal | <length-percentage>",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToDimensionOfContentArea",
		groups: [
			"CSS Box Alignment"
		],
		initial: "normal",
		appliesto: "multiColumnElementsFlexContainersGridContainers",
		computed: "asSpecifiedWithLengthsAbsoluteAndNormalComputingToZeroExceptMultiColumn",
		order: "perGrammar",
		status: "standard"
	},
		"column-rule": {
		syntax: "<'column-rule-width'> || <'column-rule-style'> || <'column-rule-color'>",
		media: "visual",
		inherited: false,
		animationType: [
			"column-rule-color",
			"column-rule-style",
			"column-rule-width"
		],
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: [
			"column-rule-width",
			"column-rule-style",
			"column-rule-color"
		],
		appliesto: "multicolElements",
		computed: [
			"column-rule-color",
			"column-rule-style",
			"column-rule-width"
		],
		order: "perGrammar",
		status: "standard"
	},
		"column-rule-color": {
		syntax: "<color>",
		media: "visual",
		inherited: false,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: "currentcolor",
		appliesto: "multicolElements",
		computed: "computedColor",
		order: "perGrammar",
		status: "standard"
	},
		"column-rule-style": {
		syntax: "<'border-style'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: "none",
		appliesto: "multicolElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"column-rule-width": {
		syntax: "<'border-width'>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: "medium",
		appliesto: "multicolElements",
		computed: "absoluteLength0IfColumnRuleStyleNoneOrHidden",
		order: "perGrammar",
		status: "standard"
	},
		"column-span": {
		syntax: "none | all",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: "none",
		appliesto: "inFlowBlockLevelElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"column-width": {
		syntax: "<length> | auto",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Columns"
		],
		initial: "auto",
		appliesto: "blockContainersExceptTableWrappers",
		computed: "absoluteLengthZeroOrLarger",
		order: "perGrammar",
		status: "standard"
	},
		columns: columns,
		contain: contain,
		content: content,
		"counter-increment": {
		syntax: "[ <custom-ident> <integer>? ]+ | none",
		media: "all",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Counter Styles"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"counter-reset": {
		syntax: "[ <custom-ident> <integer>? ]+ | none",
		media: "all",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Counter Styles"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		cursor: cursor,
		direction: direction,
		display: display,
		"empty-cells": {
		syntax: "show | hide",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Table"
		],
		initial: "show",
		appliesto: "tableCellElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		filter: filter,
		flex: flex,
		"flex-basis": {
		syntax: "content | <'width'>",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToFlexContainersInnerMainSize",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "auto",
		appliesto: "flexItemsAndInFlowPseudos",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "lengthOrPercentageBeforeKeywordIfBothPresent",
		status: "standard"
	},
		"flex-direction": {
		syntax: "row | row-reverse | column | column-reverse",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "row",
		appliesto: "flexContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"flex-flow": {
		syntax: "<'flex-direction'> || <'flex-wrap'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: [
			"flex-direction",
			"flex-wrap"
		],
		appliesto: "flexContainers",
		computed: [
			"flex-direction",
			"flex-wrap"
		],
		order: "orderOfAppearance",
		status: "standard"
	},
		"flex-grow": {
		syntax: "<number>",
		media: "visual",
		inherited: false,
		animationType: "number",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "0",
		appliesto: "flexItemsAndInFlowPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"flex-shrink": {
		syntax: "<number>",
		media: "visual",
		inherited: false,
		animationType: "number",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "1",
		appliesto: "flexItemsAndInFlowPseudos",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"flex-wrap": {
		syntax: "nowrap | wrap | wrap-reverse",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "nowrap",
		appliesto: "flexContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		float: float,
		font: font,
		"font-family": {
		syntax: "[ <family-name> | <generic-family> ]#",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "dependsOnUserAgent",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-feature-settings": {
		syntax: "normal | <feature-tag-value>#",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-kerning": {
		syntax: "auto | normal | none",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-language-override": {
		syntax: "normal | <string>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-optical-sizing": {
		syntax: "auto | none",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "perGrammar",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-variation-settings": {
		syntax: "normal | [ <string> <number> ]#",
		media: "visual",
		inherited: true,
		animationType: "transform",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "perGrammar",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "experimental"
	},
		"font-size": {
		syntax: "<absolute-size> | <relative-size> | <length-percentage>",
		media: "visual",
		inherited: true,
		animationType: "length",
		percentages: "referToParentElementsFontSize",
		groups: [
			"CSS Fonts"
		],
		initial: "medium",
		appliesto: "allElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-size-adjust": {
		syntax: "none | <number>",
		media: "visual",
		inherited: true,
		animationType: "number",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-stretch": {
		syntax: "<font-stretch-absolute>",
		media: "visual",
		inherited: true,
		animationType: "fontStretch",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-style": {
		syntax: "normal | italic | oblique <angle>?",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-synthesis": {
		syntax: "none | [ weight || style ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "weight style",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-variant": {
		syntax: "normal | none | [ <common-lig-values> || <discretionary-lig-values> || <historical-lig-values> || <contextual-alt-values> || stylistic( <feature-value-name> ) || historical-forms || styleset( <feature-value-name># ) || character-variant( <feature-value-name># ) || swash( <feature-value-name> ) || ornaments( <feature-value-name> ) || annotation( <feature-value-name> ) || [ small-caps | all-small-caps | petite-caps | all-petite-caps | unicase | titling-caps ] || <numeric-figure-values> || <numeric-spacing-values> || <numeric-fraction-values> || ordinal || slashed-zero || <east-asian-variant-values> || <east-asian-width-values> || ruby ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-variant-alternates": {
		syntax: "normal | [ stylistic( <feature-value-name> ) || historical-forms || styleset( <feature-value-name># ) || character-variant( <feature-value-name># ) || swash( <feature-value-name> ) || ornaments( <feature-value-name> ) || annotation( <feature-value-name> ) ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-variant-caps": {
		syntax: "normal | small-caps | all-small-caps | petite-caps | all-petite-caps | unicase | titling-caps",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-variant-east-asian": {
		syntax: "normal | [ <east-asian-variant-values> || <east-asian-width-values> || ruby ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-variant-ligatures": {
		syntax: "normal | none | [ <common-lig-values> || <discretionary-lig-values> || <historical-lig-values> || <contextual-alt-values> ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-variant-numeric": {
		syntax: "normal | [ <numeric-figure-values> || <numeric-spacing-values> || <numeric-fraction-values> || ordinal || slashed-zero ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-variant-position": {
		syntax: "normal | sub | super",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"font-weight": {
		syntax: "<font-weight-absolute> | bolder | lighter",
		media: "visual",
		inherited: true,
		animationType: "fontWeight",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "keywordOrNumericalValueBolderLighterTransformedToRealValue",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		gap: gap,
		grid: grid,
		"grid-area": {
		syntax: "<grid-line> [ / <grid-line> ]{0,3}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: [
			"grid-row-start",
			"grid-column-start",
			"grid-row-end",
			"grid-column-end"
		],
		appliesto: "gridItemsAndBoxesWithinGridContainer",
		computed: [
			"grid-row-start",
			"grid-column-start",
			"grid-row-end",
			"grid-column-end"
		],
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-auto-columns": {
		syntax: "<track-size>+",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToDimensionOfContentArea",
		groups: [
			"CSS Grid Layout"
		],
		initial: "auto",
		appliesto: "gridContainers",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-auto-flow": {
		syntax: "[ row | column ] || dense",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: "row",
		appliesto: "gridContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-auto-rows": {
		syntax: "<track-size>+",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToDimensionOfContentArea",
		groups: [
			"CSS Grid Layout"
		],
		initial: "auto",
		appliesto: "gridContainers",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-column": {
		syntax: "<grid-line> [ / <grid-line> ]?",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: [
			"grid-column-start",
			"grid-column-end"
		],
		appliesto: "gridItemsAndBoxesWithinGridContainer",
		computed: [
			"grid-column-start",
			"grid-column-end"
		],
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-column-end": {
		syntax: "<grid-line>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: "auto",
		appliesto: "gridItemsAndBoxesWithinGridContainer",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-column-gap": {
		syntax: "<length-percentage>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToDimensionOfContentArea",
		groups: [
			"CSS Grid Layout"
		],
		initial: "0",
		appliesto: "gridContainers",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		status: "obsolete"
	},
		"grid-column-start": {
		syntax: "<grid-line>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: "auto",
		appliesto: "gridItemsAndBoxesWithinGridContainer",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-gap": {
		syntax: "<'grid-row-gap'> <'grid-column-gap'>?",
		media: "visual",
		inherited: false,
		animationType: [
			"grid-row-gap",
			"grid-column-gap"
		],
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: [
			"grid-row-gap",
			"grid-column-gap"
		],
		appliesto: "gridContainers",
		computed: [
			"grid-row-gap",
			"grid-column-gap"
		],
		order: "uniqueOrder",
		status: "obsolete"
	},
		"grid-row": {
		syntax: "<grid-line> [ / <grid-line> ]?",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: [
			"grid-row-start",
			"grid-row-end"
		],
		appliesto: "gridItemsAndBoxesWithinGridContainer",
		computed: [
			"grid-row-start",
			"grid-row-end"
		],
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-row-end": {
		syntax: "<grid-line>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: "auto",
		appliesto: "gridItemsAndBoxesWithinGridContainer",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-row-gap": {
		syntax: "<length-percentage>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToDimensionOfContentArea",
		groups: [
			"CSS Grid Layout"
		],
		initial: "0",
		appliesto: "gridContainers",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		status: "obsolete"
	},
		"grid-row-start": {
		syntax: "<grid-line>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: "auto",
		appliesto: "gridItemsAndBoxesWithinGridContainer",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-template": {
		syntax: "none | [ <'grid-template-rows'> / <'grid-template-columns'> ] | [ <line-names>? <string> <track-size>? <line-names>? ]+ [ / <explicit-track-list> ]?",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: [
			"grid-template-columns",
			"grid-template-rows"
		],
		groups: [
			"CSS Grid Layout"
		],
		initial: [
			"grid-template-columns",
			"grid-template-rows",
			"grid-template-areas"
		],
		appliesto: "gridContainers",
		computed: [
			"grid-template-columns",
			"grid-template-rows",
			"grid-template-areas"
		],
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-template-areas": {
		syntax: "none | <string>+",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Grid Layout"
		],
		initial: "none",
		appliesto: "gridContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-template-columns": {
		syntax: "none | <track-list> | <auto-track-list>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToDimensionOfContentArea",
		groups: [
			"CSS Grid Layout"
		],
		initial: "none",
		appliesto: "gridContainers",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		status: "standard"
	},
		"grid-template-rows": {
		syntax: "none | <track-list> | <auto-track-list>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToDimensionOfContentArea",
		groups: [
			"CSS Grid Layout"
		],
		initial: "none",
		appliesto: "gridContainers",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		status: "standard"
	},
		"hanging-punctuation": {
		syntax: "none | [ first || [ force-end | allow-end ] || last ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		height: height,
		hyphens: hyphens,
		"image-orientation": {
		syntax: "from-image | <angle> | [ <angle>? flip ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Images"
		],
		initial: "0deg",
		appliesto: "allElements",
		computed: "angleRoundedToNextQuarter",
		order: "uniqueOrder",
		status: "standard"
	},
		"image-rendering": {
		syntax: "auto | crisp-edges | pixelated",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Images"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"image-resolution": {
		syntax: "[ from-image || <resolution> ] && snap?",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Images"
		],
		initial: "1dppx",
		appliesto: "allElements",
		computed: "asSpecifiedWithExceptionOfResolution",
		order: "uniqueOrder",
		status: "experimental"
	},
		"ime-mode": {
		syntax: "auto | normal | active | inactive | disabled",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: "auto",
		appliesto: "textFields",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "obsolete"
	},
		"initial-letter": {
		syntax: "normal | [ <number> <integer>? ]",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Inline"
		],
		initial: "normal",
		appliesto: "firstLetterPseudoElementsAndInlineLevelFirstChildren",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "experimental"
	},
		"initial-letter-align": {
		syntax: "[ auto | alphabetic | hanging | ideographic ]",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Inline"
		],
		initial: "auto",
		appliesto: "firstLetterPseudoElementsAndInlineLevelFirstChildren",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "experimental"
	},
		"inline-size": {
		syntax: "<'width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "inlineSizeOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "auto",
		appliesto: "sameAsWidthAndHeight",
		computed: "sameAsWidthAndHeight",
		order: "uniqueOrder",
		status: "standard"
	},
		isolation: isolation,
		"justify-content": {
		syntax: "normal | <content-distribution> | <overflow-position>? [ <content-position> | left | right ]",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "normal",
		appliesto: "flexContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"justify-items": {
		syntax: "normal | stretch | <baseline-position> | <overflow-position>? [ <self-position> | left | right ] | legacy | legacy && [ left | right | center ]",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Box Alignment"
		],
		initial: "legacy",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"justify-self": {
		syntax: "auto | normal | stretch | <baseline-position> | <overflow-position>? [ <self-position> | left | right ]",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Box Alignment"
		],
		initial: "auto",
		appliesto: "blockLevelBoxesAndAbsolutelyPositionedBoxesAndGridItems",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		left: left,
		"letter-spacing": {
		syntax: "normal | <length>",
		media: "visual",
		inherited: true,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "optimumValueOfAbsoluteLengthOrNormal",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line"
		],
		status: "standard"
	},
		"line-break": {
		syntax: "auto | loose | normal | strict",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"line-clamp": {
		syntax: "none | <integer>",
		media: "visual",
		inherited: false,
		animationType: "integer",
		percentages: "no",
		groups: [
			"CSS Overflow"
		],
		initial: "none",
		appliesto: "blockContainersExceptMultiColumnContainers",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	},
		"line-height": {
		syntax: "normal | <number> | <length> | <percentage>",
		media: "visual",
		inherited: true,
		animationType: "numberOrLength",
		percentages: "referToElementFontSize",
		groups: [
			"CSS Fonts"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "absoluteLengthOrAsSpecified",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter",
			"::first-line",
			"::placeholder"
		],
		status: "standard"
	},
		"line-height-step": {
		syntax: "<length>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Fonts"
		],
		initial: "0",
		appliesto: "blockContainerElements",
		computed: "absoluteLength",
		order: "perGrammar",
		status: "experimental"
	},
		"list-style": {
		syntax: "<'list-style-type'> || <'list-style-position'> || <'list-style-image'>",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Lists and Counters"
		],
		initial: [
			"list-style-type",
			"list-style-position",
			"list-style-image"
		],
		appliesto: "listItems",
		computed: [
			"list-style-image",
			"list-style-position",
			"list-style-type"
		],
		order: "orderOfAppearance",
		status: "standard"
	},
		"list-style-image": {
		syntax: "<url> | none",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Lists and Counters"
		],
		initial: "none",
		appliesto: "listItems",
		computed: "noneOrImageWithAbsoluteURI",
		order: "uniqueOrder",
		status: "standard"
	},
		"list-style-position": {
		syntax: "inside | outside",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Lists and Counters"
		],
		initial: "outside",
		appliesto: "listItems",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"list-style-type": {
		syntax: "<counter-style> | <string> | none",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Lists and Counters"
		],
		initial: "disc",
		appliesto: "listItems",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		margin: margin,
		"margin-block-end": {
		syntax: "<'margin-left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "dependsOnLayoutModel",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "sameAsMargin",
		computed: "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
		order: "uniqueOrder",
		status: "standard"
	},
		"margin-block-start": {
		syntax: "<'margin-left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "dependsOnLayoutModel",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "sameAsMargin",
		computed: "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
		order: "uniqueOrder",
		status: "standard"
	},
		"margin-bottom": {
		syntax: "<length> | <percentage> | auto",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsExceptTableDisplayTypes",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"margin-inline-end": {
		syntax: "<'margin-left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "dependsOnLayoutModel",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "sameAsMargin",
		computed: "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
		order: "uniqueOrder",
		status: "standard"
	},
		"margin-inline-start": {
		syntax: "<'margin-left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "dependsOnLayoutModel",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "sameAsMargin",
		computed: "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
		order: "uniqueOrder",
		status: "standard"
	},
		"margin-left": {
		syntax: "<length> | <percentage> | auto",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsExceptTableDisplayTypes",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"margin-right": {
		syntax: "<length> | <percentage> | auto",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsExceptTableDisplayTypes",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"margin-top": {
		syntax: "<length> | <percentage> | auto",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsExceptTableDisplayTypes",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		mask: mask,
		"mask-border": {
		syntax: "<'mask-border-source'> || <'mask-border-slice'> [ / <'mask-border-width'>? [ / <'mask-border-outset'> ]? ]? || <'mask-border-repeat'> || <'mask-border-mode'>",
		media: "visual",
		inherited: false,
		animationType: [
			"mask-border-mode",
			"mask-border-outset",
			"mask-border-repeat",
			"mask-border-slice",
			"mask-border-source",
			"mask-border-width"
		],
		percentages: [
			"mask-border-slice",
			"mask-border-width"
		],
		groups: [
			"CSS Masking"
		],
		initial: [
			"mask-border-mode",
			"mask-border-outset",
			"mask-border-repeat",
			"mask-border-slice",
			"mask-border-source",
			"mask-border-width"
		],
		appliesto: "allElementsSVGContainerElements",
		computed: [
			"mask-border-mode",
			"mask-border-outset",
			"mask-border-repeat",
			"mask-border-slice",
			"mask-border-source",
			"mask-border-width"
		],
		order: "perGrammar",
		stacking: true,
		status: "experimental"
	},
		"mask-border-mode": {
		syntax: "luminance | alpha",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "alpha",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	},
		"mask-border-outset": {
		syntax: "[ <length> | <number> ]{1,4}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "0",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "perGrammar",
		status: "experimental"
	},
		"mask-border-repeat": {
		syntax: "[ stretch | repeat | round | space ]{1,2}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "stretch",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	},
		"mask-border-slice": {
		syntax: "<number-percentage>{1,4} fill?",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "referToSizeOfMaskBorderImage",
		groups: [
			"CSS Masking"
		],
		initial: "0",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	},
		"mask-border-source": {
		syntax: "none | <image>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "none",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecifiedURLsAbsolute",
		order: "perGrammar",
		status: "experimental"
	},
		"mask-border-width": {
		syntax: "[ <length-percentage> | <number> | auto ]{1,4}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "relativeToMaskBorderImageArea",
		groups: [
			"CSS Masking"
		],
		initial: "auto",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "perGrammar",
		status: "experimental"
	},
		"mask-clip": {
		syntax: "[ <geometry-box> | no-clip ]#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "border-box",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"mask-composite": {
		syntax: "<compositing-operator>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "add",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"mask-image": {
		syntax: "<mask-reference>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "none",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecifiedURLsAbsolute",
		order: "perGrammar",
		status: "standard"
	},
		"mask-mode": {
		syntax: "<masking-mode>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "match-source",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"mask-origin": {
		syntax: "<geometry-box>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "border-box",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"mask-position": {
		syntax: "<position>#",
		media: "visual",
		inherited: false,
		animationType: "repeatableListOfSimpleListOfLpc",
		percentages: "referToSizeOfMaskPaintingArea",
		groups: [
			"CSS Masking"
		],
		initial: "center",
		appliesto: "allElementsSVGContainerElements",
		computed: "consistsOfTwoKeywordsForOriginAndOffsets",
		order: "perGrammar",
		status: "standard"
	},
		"mask-repeat": {
		syntax: "<repeat-style>#",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "no-repeat",
		appliesto: "allElementsSVGContainerElements",
		computed: "consistsOfTwoDimensionKeywords",
		order: "perGrammar",
		status: "standard"
	},
		"mask-size": {
		syntax: "<bg-size>#",
		media: "visual",
		inherited: false,
		animationType: "repeatableListOfSimpleListOfLpc",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "auto",
		appliesto: "allElementsSVGContainerElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "perGrammar",
		status: "standard"
	},
		"mask-type": {
		syntax: "luminance | alpha",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Masking"
		],
		initial: "luminance",
		appliesto: "maskElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "standard"
	},
		"max-block-size": {
		syntax: "<'max-width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "blockSizeOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "sameAsWidthAndHeight",
		computed: "sameAsMaxWidthAndMaxHeight",
		order: "uniqueOrder",
		status: "experimental"
	},
		"max-height": {
		syntax: "<length> | <percentage> | none | max-content | min-content | fit-content | fill-available",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "regardingHeightOfGeneratedBoxContainingBlockPercentagesNone",
		groups: [
			"CSS Box Model"
		],
		initial: "none",
		appliesto: "allElementsButNonReplacedAndTableColumns",
		computed: "percentageAsSpecifiedAbsoluteLengthOrNone",
		order: "uniqueOrder",
		status: "standard"
	},
		"max-inline-size": {
		syntax: "<'max-width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "inlineSizeOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "sameAsWidthAndHeight",
		computed: "sameAsMaxWidthAndMaxHeight",
		order: "uniqueOrder",
		status: "experimental"
	},
		"max-lines": {
		syntax: "none | <integer>",
		media: "visual",
		inherited: false,
		animationType: "integer",
		percentages: "no",
		groups: [
			"CSS Overflow"
		],
		initial: "none",
		appliesto: "blockContainersExceptMultiColumnContainers",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	},
		"max-width": {
		syntax: "<length> | <percentage> | none | max-content | min-content | fit-content | fill-available",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "none",
		appliesto: "allElementsButNonReplacedAndTableRows",
		computed: "percentageAsSpecifiedAbsoluteLengthOrNone",
		order: "uniqueOrder",
		status: "standard"
	},
		"min-block-size": {
		syntax: "<'min-width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "blockSizeOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "sameAsWidthAndHeight",
		computed: "sameAsMinWidthAndMinHeight",
		order: "uniqueOrder",
		status: "standard"
	},
		"min-height": {
		syntax: "<length> | <percentage> | auto | max-content | min-content | fit-content | fill-available",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "regardingHeightOfGeneratedBoxContainingBlockPercentages0",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsButNonReplacedAndTableColumns",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		status: "standard"
	},
		"min-inline-size": {
		syntax: "<'min-width'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "inlineSizeOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "sameAsWidthAndHeight",
		computed: "sameAsMinWidthAndMinHeight",
		order: "uniqueOrder",
		status: "standard"
	},
		"min-width": {
		syntax: "<length> | <percentage> | auto | max-content | min-content | fit-content | fill-available",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsButNonReplacedAndTableRows",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		status: "standard"
	},
		"mix-blend-mode": {
		syntax: "<blend-mode>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Compositing and Blending"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		stacking: true,
		status: "standard"
	},
		"object-fit": {
		syntax: "fill | contain | cover | none | scale-down",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Images"
		],
		initial: "fill",
		appliesto: "replacedElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"object-position": {
		syntax: "<position>",
		media: "visual",
		inherited: true,
		animationType: "repeatableListOfSimpleListOfLpc",
		percentages: "referToWidthAndHeightOfElement",
		groups: [
			"CSS Images"
		],
		initial: "50% 50%",
		appliesto: "replacedElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		offset: offset,
		"offset-anchor": {
		syntax: "auto | <position>",
		media: "visual",
		inherited: false,
		animationType: "position",
		percentages: "relativeToWidthAndHeight",
		groups: [
			"CSS Motion"
		],
		initial: "auto",
		appliesto: "transformableElements",
		computed: "forLengthAbsoluteValueOtherwisePercentage",
		order: "perGrammar",
		status: "experimental"
	},
		"offset-block-end": {
		syntax: "<'left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalHeightOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "auto",
		appliesto: "positionedElements",
		computed: "sameAsBoxOffsets",
		order: "uniqueOrder",
		status: "standard"
	},
		"offset-block-start": {
		syntax: "<'left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalHeightOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "auto",
		appliesto: "positionedElements",
		computed: "sameAsBoxOffsets",
		order: "uniqueOrder",
		status: "standard"
	},
		"offset-inline-end": {
		syntax: "<'left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "auto",
		appliesto: "positionedElements",
		computed: "sameAsBoxOffsets",
		order: "uniqueOrder",
		status: "standard"
	},
		"offset-inline-start": {
		syntax: "<'left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "auto",
		appliesto: "positionedElements",
		computed: "sameAsBoxOffsets",
		order: "uniqueOrder",
		status: "standard"
	},
		"offset-distance": {
		syntax: "<length-percentage>",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToTotalPathLength",
		groups: [
			"CSS Motion"
		],
		initial: "0",
		appliesto: "transformableElements",
		computed: "forLengthAbsoluteValueOtherwisePercentage",
		order: "perGrammar",
		status: "experimental"
	},
		"offset-path": {
		syntax: "none | ray( [ <angle> && <size>? && contain? ] ) | <path()> | <url> | [ <basic-shape> || <geometry-box> ]",
		media: "visual",
		inherited: false,
		animationType: "angleOrBasicShapeOrPath",
		percentages: "no",
		groups: [
			"CSS Motion"
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		initial: "none",
		appliesto: "transformableElements",
		computed: "asSpecified",
		order: "perGrammar",
		stacking: true,
		status: "experimental"
	},
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		syntax: "auto | <position>",
		media: "visual",
		inherited: false,
		animationType: "position",
		percentages: "referToSizeOfContainingBlock",
		groups: [
			"CSS Motion"
		],
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		appliesto: "transformableElements",
		computed: "forLengthAbsoluteValueOtherwisePercentage",
		order: "perGrammar",
		status: "experimental"
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		syntax: "[ auto | reverse ] || <angle>",
		media: "visual",
		inherited: false,
		animationType: "angle",
		percentages: "no",
		groups: [
			"CSS Motion"
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		appliesto: "transformableElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	},
		opacity: opacity,
		order: order,
		orphans: orphans,
		outline: outline,
		"outline-color": {
		syntax: "<color> | invert",
		media: [
			"visual",
			"interactive"
		],
		inherited: false,
		animationType: "color",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
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		initial: "invertOrCurrentColor",
		appliesto: "allElements",
		computed: "invertForTranslucentColorRGBAOtherwiseRGB",
		order: "uniqueOrder",
		status: "standard"
	},
		"outline-offset": {
		syntax: "<length>",
		media: [
			"visual",
			"interactive"
		],
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: "0",
		appliesto: "allElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		status: "standard"
	},
		"outline-style": {
		syntax: "auto | <br-style>",
		media: [
			"visual",
			"interactive"
		],
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"outline-width": {
		syntax: "<br-width>",
		media: [
			"visual",
			"interactive"
		],
		inherited: false,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Basic User Interface"
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		initial: "medium",
		appliesto: "allElements",
		computed: "absoluteLength0ForNone",
		order: "uniqueOrder",
		status: "standard"
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		overflow: overflow,
		"overflow-anchor": {
		syntax: "auto | none",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Scroll Anchoring"
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		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
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		"overflow-block": {
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		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Overflow"
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		initial: "auto",
		appliesto: "blockContainersFlexContainersGridContainers",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
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		"overflow-clip-box": {
		syntax: "padding-box | content-box",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Mozilla Extensions"
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		initial: "padding-box",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Overflow"
		],
		initial: "auto",
		appliesto: "blockContainersFlexContainersGridContainers",
		computed: "asSpecified",
		order: "perGrammar",
		status: "experimental"
	},
		"overflow-wrap": {
		syntax: "normal | break-word",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "normal",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"overflow-x": {
		syntax: "visible | hidden | clip | scroll | auto",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Overflow"
		],
		initial: "visible",
		appliesto: "blockContainersFlexContainersGridContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"overflow-y": {
		syntax: "visible | hidden | clip | scroll | auto",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Overflow"
		],
		initial: "visible",
		appliesto: "blockContainersFlexContainersGridContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"overscroll-behavior": {
		syntax: "[ contain | none | auto ]{1,2}",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Box Model"
		],
		initial: "auto",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"overscroll-behavior-x": {
		syntax: "contain | none | auto",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Box Model"
		],
		initial: "auto",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		"overscroll-behavior-y": {
		syntax: "contain | none | auto",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Box Model"
		],
		initial: "auto",
		appliesto: "nonReplacedBlockAndInlineBlockElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
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		padding: padding,
		"padding-block-end": {
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		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "allElements",
		computed: "asLength",
		order: "uniqueOrder",
		status: "standard"
	},
		"padding-block-start": {
		syntax: "<'padding-left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
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		initial: "0",
		appliesto: "allElements",
		computed: "asLength",
		order: "uniqueOrder",
		status: "standard"
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		syntax: "<length> | <percentage>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsExceptInternalTableDisplayTypes",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"padding-inline-end": {
		syntax: "<'padding-left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "allElements",
		computed: "asLength",
		order: "uniqueOrder",
		status: "standard"
	},
		"padding-inline-start": {
		syntax: "<'padding-left'>",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "logicalWidthOfContainingBlock",
		groups: [
			"CSS Logical Properties"
		],
		initial: "0",
		appliesto: "allElements",
		computed: "asLength",
		order: "uniqueOrder",
		status: "standard"
	},
		"padding-left": {
		syntax: "<length> | <percentage>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsExceptInternalTableDisplayTypes",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"padding-right": {
		syntax: "<length> | <percentage>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsExceptInternalTableDisplayTypes",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
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		"padding-top": {
		syntax: "<length> | <percentage>",
		media: "visual",
		inherited: false,
		animationType: "length",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Box Model"
		],
		initial: "0",
		appliesto: "allElementsExceptInternalTableDisplayTypes",
		computed: "percentageAsSpecifiedOrAbsoluteLength",
		order: "uniqueOrder",
		alsoAppliesTo: [
			"::first-letter"
		],
		status: "standard"
	},
		"page-break-after": {
		syntax: "auto | always | avoid | left | right | recto | verso",
		media: [
			"visual",
			"paged"
		],
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Pages"
		],
		initial: "auto",
		appliesto: "blockElementsInNormalFlow",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"page-break-before": {
		syntax: "auto | always | avoid | left | right | recto | verso",
		media: [
			"visual",
			"paged"
		],
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Pages"
		],
		initial: "auto",
		appliesto: "blockElementsInNormalFlow",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"page-break-inside": {
		syntax: "auto | avoid",
		media: [
			"visual",
			"paged"
		],
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Pages"
		],
		initial: "auto",
		appliesto: "blockElementsInNormalFlow",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"paint-order": {
		syntax: "normal | [ fill || stroke || markers ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "normal",
		appliesto: "textElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "experimental"
	},
		perspective: perspective,
		"perspective-origin": {
		syntax: "<position>",
		media: "visual",
		inherited: false,
		animationType: "simpleListOfLpc",
		percentages: "referToSizeOfBoundingBox",
		groups: [
			"CSS Transforms"
		],
		initial: "50% 50%",
		appliesto: "transformableElements",
		computed: "forLengthAbsoluteValueOtherwisePercentage",
		order: "oneOrTwoValuesLengthAbsoluteKeywordsPercentages",
		status: "standard"
	},
		"place-content": {
		syntax: "<'align-content'> <'justify-content'>?",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Flexible Box Layout"
		],
		initial: "normal",
		appliesto: "multilineFlexContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"pointer-events": {
		syntax: "auto | none | visiblePainted | visibleFill | visibleStroke | visible | painted | fill | stroke | all | inherit",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"Pointer Events"
		],
		initial: "auto",
		appliesto: "allElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		position: position,
		quotes: quotes,
		resize: resize,
		right: right,
		rotate: rotate,
		"row-gap": {
		syntax: "normal | <length-percentage>",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToDimensionOfContentArea",
		groups: [
			"CSS Box Alignment"
		],
		initial: "normal",
		appliesto: "multiColumnElementsFlexContainersGridContainers",
		computed: "asSpecifiedWithLengthsAbsoluteAndNormalComputingToZeroExceptMultiColumn",
		order: "perGrammar",
		status: "standard"
	},
		"ruby-align": {
		syntax: "start | center | space-between | space-around",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Ruby"
		],
		initial: "space-around",
		appliesto: "rubyBasesAnnotationsBaseAnnotationContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "experimental"
	},
		"ruby-merge": {
		syntax: "separate | collapse | auto",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Ruby"
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		initial: "separate",
		appliesto: "rubyAnnotationsContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "experimental"
	},
		"ruby-position": {
		syntax: "over | under | inter-character",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Ruby"
		],
		initial: "over",
		appliesto: "rubyAnnotationsContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "experimental"
	},
		scale: scale,
		"scroll-behavior": {
		syntax: "auto | smooth",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSSOM View"
		],
		initial: "auto",
		appliesto: "scrollingBoxes",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"scroll-snap-coordinate": {
		syntax: "none | <position>#",
		media: "interactive",
		inherited: false,
		animationType: "position",
		percentages: "referToBorderBox",
		groups: [
			"CSS Scroll Snap"
		],
		initial: "none",
		appliesto: "allElements",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		status: "standard"
	},
		"scroll-snap-destination": {
		syntax: "<position>",
		media: "interactive",
		inherited: false,
		animationType: "position",
		percentages: "relativeToScrollContainerPaddingBoxAxis",
		groups: [
			"CSS Scroll Snap"
		],
		initial: "0px 0px",
		appliesto: "scrollContainers",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		status: "standard"
	},
		"scroll-snap-points-x": {
		syntax: "none | repeat( <length-percentage> )",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "relativeToScrollContainerPaddingBoxAxis",
		groups: [
			"CSS Scroll Snap"
		],
		initial: "none",
		appliesto: "scrollContainers",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		status: "obsolete"
	},
		"scroll-snap-points-y": {
		syntax: "none | repeat( <length-percentage> )",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "relativeToScrollContainerPaddingBoxAxis",
		groups: [
			"CSS Scroll Snap"
		],
		initial: "none",
		appliesto: "scrollContainers",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		status: "obsolete"
	},
		"scroll-snap-type": {
		syntax: "none | mandatory | proximity",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Scroll Snap"
		],
		initial: "none",
		appliesto: "scrollContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"scroll-snap-type-x": {
		syntax: "none | mandatory | proximity",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Scroll Snap"
		],
		initial: "none",
		appliesto: "scrollContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"scroll-snap-type-y": {
		syntax: "none | mandatory | proximity",
		media: "interactive",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Scroll Snap"
		],
		initial: "none",
		appliesto: "scrollContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "nonstandard"
	},
		"shape-image-threshold": {
		syntax: "<number>",
		media: "visual",
		inherited: false,
		animationType: "number",
		percentages: "no",
		groups: [
			"CSS Shapes"
		],
		initial: "0.0",
		appliesto: "floats",
		computed: "specifiedValueNumberClipped0To1",
		order: "uniqueOrder",
		status: "standard"
	},
		"shape-margin": {
		syntax: "<length-percentage>",
		media: "visual",
		inherited: false,
		animationType: "lpc",
		percentages: "referToWidthOfContainingBlock",
		groups: [
			"CSS Shapes"
		],
		initial: "0",
		appliesto: "floats",
		computed: "asSpecifiedRelativeToAbsoluteLengths",
		order: "uniqueOrder",
		status: "standard"
	},
		"shape-outside": {
		syntax: "none | <shape-box> || <basic-shape> | <image>",
		media: "visual",
		inherited: false,
		animationType: "basicShapeOtherwiseNo",
		percentages: "no",
		groups: [
			"CSS Shapes"
		],
		initial: "none",
		appliesto: "floats",
		computed: "asDefinedForBasicShapeWithAbsoluteURIOtherwiseAsSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"tab-size": {
		syntax: "<integer> | <length>",
		media: "visual",
		inherited: true,
		animationType: "length",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "8",
		appliesto: "blockContainers",
		computed: "specifiedIntegerOrAbsoluteLength",
		order: "uniqueOrder",
		status: "standard"
	},
		"table-layout": {
		syntax: "auto | fixed",
		media: "visual",
		inherited: false,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Table"
		],
		initial: "auto",
		appliesto: "tableElements",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"text-align": {
		syntax: "start | end | left | right | center | justify | match-parent",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "startOrNamelessValueIfLTRRightIfRTL",
		appliesto: "blockContainers",
		computed: "asSpecifiedExceptMatchParent",
		order: "orderOfAppearance",
		alsoAppliesTo: [
			"::placeholder"
		],
		status: "standard"
	},
		"text-align-last": {
		syntax: "auto | start | end | left | right | center | justify",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Text"
		],
		initial: "auto",
		appliesto: "blockContainers",
		computed: "asSpecified",
		order: "uniqueOrder",
		status: "standard"
	},
		"text-combine-upright": {
		syntax: "none | all | [ digits <integer>? ]",
		media: "visual",
		inherited: true,
		animationType: "discrete",
		percentages: "no",
		groups: [
			"CSS Writing Modes"
		],
		initial: "none",
		appliesto: "nonReplacedInlineElements",
		computed: "keywordPlusIntegerIfDigits",
		order: "uniqueOrder",
		status: "standard"
	},
		"text-decoration": {
		syntax: "<'text-decoration-line'> || <'text-decoration-style'> || <'text-decoration-color'>",
		media: "visual",
		inherited: false,
		animationType: [
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	},
		"br-width": {
		syntax: "<length> | thin | medium | thick"
	},
		"brightness()": {
		syntax: "brightness( <number-percentage> )"
	},
		"calc()": {
		syntax: "calc( <calc-sum> )"
	},
		"calc-sum": {
		syntax: "<calc-product> [ [ '+' | '-' ] <calc-product> ]*"
	},
		"calc-product": {
		syntax: "<calc-value> [ '*' <calc-value> | '/' <number> ]*"
	},
		"calc-value": {
		syntax: "<number> | <dimension> | <percentage> | ( <calc-sum> )"
	},
		"cf-final-image": {
		syntax: "<image> | <color>"
	},
		"cf-mixing-image": {
		syntax: "<percentage>? && <image>"
	},
		"circle()": {
		syntax: "circle( [ <shape-radius> ]? [ at <position> ]? )"
	},
		"class-selector": {
		syntax: "'.' <ident-token>"
	},
		"clip-source": {
		syntax: "<url>"
	},
		color: color$1,
		"color-stop": {
		syntax: "<color> <length-percentage>?"
	},
		"color-stop-list": {
		syntax: "<color-stop>#{2,}"
	},
		"common-lig-values": {
		syntax: "[ common-ligatures | no-common-ligatures ]"
	},
		"composite-style": {
		syntax: "clear | copy | source-over | source-in | source-out | source-atop | destination-over | destination-in | destination-out | destination-atop | xor"
	},
		"compositing-operator": {
		syntax: "add | subtract | intersect | exclude"
	},
		"compound-selector": {
		syntax: "[ <type-selector>? <subclass-selector>* [ <pseudo-element-selector> <pseudo-class-selector>* ]* ]!"
	},
		"compound-selector-list": {
		syntax: "<compound-selector>#"
	},
		"contextual-alt-values": {
		syntax: "[ contextual | no-contextual ]"
	},
		"content-distribution": {
		syntax: "space-between | space-around | space-evenly | stretch"
	},
		"content-list": {
		syntax: "[ <string> | contents | <image> | <quote> | <target> | <leader()> ]+"
	},
		"content-position": {
		syntax: "center | start | end | flex-start | flex-end"
	},
		"content-replacement": {
		syntax: "<image>"
	},
		"contrast()": {
		syntax: "contrast( [ <number-percentage> ] )"
	},
		"counter-style": {
		syntax: "<counter-style-name> | symbols()"
	},
		"counter-style-name": {
		syntax: "<custom-ident>"
	},
		"cross-fade()": {
		syntax: "cross-fade( <cf-mixing-image> , <cf-final-image>? )"
	},
		"cubic-bezier-timing-function": {
		syntax: "ease | ease-in | ease-out | ease-in-out | cubic-bezier(<number>, <number>, <number>, <number>)"
	},
		"deprecated-system-color": {
		syntax: "ActiveBorder | ActiveCaption | AppWorkspace | Background | ButtonFace | ButtonHighlight | ButtonShadow | ButtonText | CaptionText | GrayText | Highlight | HighlightText | InactiveBorder | InactiveCaption | InactiveCaptionText | InfoBackground | InfoText | Menu | MenuText | Scrollbar | ThreeDDarkShadow | ThreeDFace | ThreeDHighlight | ThreeDLightShadow | ThreeDShadow | Window | WindowFrame | WindowText"
	},
		"discretionary-lig-values": {
		syntax: "[ discretionary-ligatures | no-discretionary-ligatures ]"
	},
		"display-box": {
		syntax: "contents | none"
	},
		"display-inside": {
		syntax: "flow | flow-root | table | flex | grid | subgrid | ruby"
	},
		"display-internal": {
		syntax: "table-row-group | table-header-group | table-footer-group | table-row | table-cell | table-column-group | table-column | table-caption | ruby-base | ruby-text | ruby-base-container | ruby-text-container"
	},
		"display-legacy": {
		syntax: "inline-block | inline-list-item | inline-table | inline-flex | inline-grid"
	},
		"display-listitem": {
		syntax: "<display-outside>? && [ flow | flow-root ]? && list-item"
	},
		"display-outside": {
		syntax: "block | inline | run-in"
	},
		"drop-shadow()": {
		syntax: "drop-shadow( <length>{2,3} <color>? )"
	},
		"east-asian-variant-values": {
		syntax: "[ jis78 | jis83 | jis90 | jis04 | simplified | traditional ]"
	},
		"east-asian-width-values": {
		syntax: "[ full-width | proportional-width ]"
	},
		"element()": {
		syntax: "element( <id-selector> )"
	},
		"ellipse()": {
		syntax: "ellipse( [ <shape-radius>{2} ]? [ at <position> ]? )"
	},
		"ending-shape": {
		syntax: "circle | ellipse"
	},
		"explicit-track-list": {
		syntax: "[ <line-names>? <track-size> ]+ <line-names>?"
	},
		"family-name": {
		syntax: "<string> | <custom-ident>+"
	},
		"feature-tag-value": {
		syntax: "<string> [ <integer> | on | off ]?"
	},
		"feature-type": {
		syntax: "@stylistic | @historical-forms | @styleset | @character-variant | @swash | @ornaments | @annotation"
	},
		"feature-value-block": {
		syntax: "<feature-type> {\n  <feature-value-declaration-list>\n}"
	},
		"feature-value-block-list": {
		syntax: "<feature-value-block>+"
	},
		"feature-value-declaration": {
		syntax: "<custom-ident>: <integer>+;"
	},
		"feature-value-declaration-list": {
		syntax: "<feature-value-declaration>"
	},
		"feature-value-name": {
		syntax: "<custom-ident>"
	},
		"fill-rule": {
		syntax: "nonzero | evenodd"
	},
		"filter-function": {
		syntax: "<blur()> | <brightness()> | <contrast()> | <drop-shadow()> | <grayscale()> | <hue-rotate()> | <invert()> | <opacity()> | <saturate()> | <sepia()>"
	},
		"filter-function-list": {
		syntax: "[ <filter-function> | <url> ]+"
	},
		"final-bg-layer": {
		syntax: "<'background-color'> || <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box> || <box>"
	},
		"fit-content()": {
		syntax: "fit-content( [ <length> | <percentage> ] )"
	},
		"fixed-breadth": {
		syntax: "<length-percentage>"
	},
		"fixed-repeat": {
		syntax: "repeat( [ <positive-integer> ] , [ <line-names>? <fixed-size> ]+ <line-names>? )"
	},
		"fixed-size": {
		syntax: "<fixed-breadth> | minmax( <fixed-breadth> , <track-breadth> ) | minmax( <inflexible-breadth> , <fixed-breadth> )"
	},
		"font-stretch-absolute": {
		syntax: "normal | ultra-condensed | extra-condensed | condensed | semi-condensed | semi-expanded | expanded | extra-expanded | ultra-expanded | <percentage>"
	},
		"font-variant-css21": {
		syntax: "[ normal | small-caps ]"
	},
		"font-weight-absolute": {
		syntax: "normal | bold | <number>"
	},
		"frames-timing-function": {
		syntax: "frames(<integer>)"
	},
		"frequency-percentage": {
		syntax: "<frequency> | <percentage>"
	},
		"general-enclosed": {
		syntax: "[ <function-token> <any-value> ) ] | ( <ident> <any-value> )"
	},
		"generic-family": {
		syntax: "serif | sans-serif | cursive | fantasy | monospace"
	},
		"generic-name": {
		syntax: "serif | sans-serif | cursive | fantasy | monospace"
	},
		"geometry-box": {
		syntax: "<shape-box> | fill-box | stroke-box | view-box"
	},
		gradient: gradient,
		"grayscale()": {
		syntax: "grayscale( <number-percentage> )"
	},
		"grid-line": {
		syntax: "auto | <custom-ident> | [ <integer> && <custom-ident>? ] | [ span && [ <integer> || <custom-ident> ] ]"
	},
		"historical-lig-values": {
		syntax: "[ historical-ligatures | no-historical-ligatures ]"
	},
		"hsl()": {
		syntax: "hsl( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsl( <hue>, <percentage>, <percentage>, <alpha-value>? )"
	},
		"hsla()": {
		syntax: "hsla( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsla( <hue>, <percentage>, <percentage>, <alpha-value>? )"
	},
		hue: hue,
		"hue-rotate()": {
		syntax: "hue-rotate( <angle> )"
	},
		"id-selector": {
		syntax: "<hash-token>"
	},
		image: image,
		"image()": {
		syntax: "image( [ [ <image> | <string> ]? , <color>? ]! )"
	},
		"image-set()": {
		syntax: "image-set( <image-set-option># )"
	},
		"image-set-option": {
		syntax: "[ <image> | <string> ] <resolution>"
	},
		"inflexible-breadth": {
		syntax: "<length> | <percentage> | min-content | max-content | auto"
	},
		"inset()": {
		syntax: "inset( <length-percentage>{1,4} [ round <border-radius> ]? )"
	},
		"invert()": {
		syntax: "invert( <number-percentage> )"
	},
		"keyframes-name": {
		syntax: "<custom-ident> | <string>"
	},
		"keyframe-block": {
		syntax: "<keyframe-selector># {\n  <declaration-list>\n}"
	},
		"keyframe-block-list": {
		syntax: "<keyframe-block>+"
	},
		"keyframe-selector": {
		syntax: "from | to | <percentage>"
	},
		"leader()": {
		syntax: "leader( <leader-type> )"
	},
		"leader-type": {
		syntax: "dotted | solid | space | <string>"
	},
		"length-percentage": {
		syntax: "<length> | <percentage>"
	},
		"line-names": {
		syntax: "'[' <custom-ident>* ']'"
	},
		"line-name-list": {
		syntax: "[ <line-names> | <name-repeat> ]+"
	},
		"linear-gradient()": {
		syntax: "linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )"
	},
		"mask-layer": {
		syntax: "<mask-reference> || <position> [ / <bg-size> ]? || <repeat-style> || <geometry-box> || [ <geometry-box> | no-clip ] || <compositing-operator> || <masking-mode>"
	},
		"mask-position": {
		syntax: "[ <length-percentage> | left | center | right ] [ <length-percentage> | top | center | bottom ]?"
	},
		"mask-reference": {
		syntax: "none | <image> | <mask-source>"
	},
		"mask-source": {
		syntax: "<url>"
	},
		"masking-mode": {
		syntax: "alpha | luminance | match-source"
	},
		"matrix()": {
		syntax: "matrix( <number> [, <number> ]{5,5} )"
	},
		"matrix3d()": {
		syntax: "matrix3d( <number> [, <number> ]{15,15} )"
	},
		"media-and": {
		syntax: "<media-in-parens> [ and <media-in-parens> ]+"
	},
		"media-condition": {
		syntax: "<media-not> | <media-and> | <media-or> | <media-in-parens>"
	},
		"media-condition-without-or": {
		syntax: "<media-not> | <media-and> | <media-in-parens>"
	},
		"media-feature": {
		syntax: "( [ <mf-plain> | <mf-boolean> | <mf-range> ] )"
	},
		"media-in-parens": {
		syntax: "( <media-condition> ) | <media-feature> | <general-enclosed>"
	},
		"media-not": {
		syntax: "not <media-in-parens>"
	},
		"media-or": {
		syntax: "<media-in-parens> [ or <media-in-parens> ]+"
	},
		"media-query": {
		syntax: "<media-condition> | [ not | only ]? <media-type> [ and <media-condition-without-or> ]?"
	},
		"media-query-list": {
		syntax: "<media-query>#"
	},
		"media-type": {
		syntax: "<ident>"
	},
		"mf-boolean": {
		syntax: "<mf-name>"
	},
		"mf-name": {
		syntax: "<ident>"
	},
		"mf-plain": {
		syntax: "<mf-name> : <mf-value>"
	},
		"mf-range": {
		syntax: "<mf-name> [ '<' | '>' ]? '='? <mf-value>\n| <mf-value> [ '<' | '>' ]? '='? <mf-name>\n| <mf-value> '<' '='? <mf-name> '<' '='? <mf-value>\n| <mf-value> '>' '='? <mf-name> '>' '='? <mf-value>"
	},
		"mf-value": {
		syntax: "<number> | <dimension> | <ident> | <ratio>"
	},
		"minmax()": {
		syntax: "minmax( [ <length> | <percentage> | <flex> | min-content | max-content | auto ] , [ <length> | <percentage> | <flex> | min-content | max-content | auto ] )"
	},
		"named-color": {
		syntax: "transparent | aliceblue | antiquewhite | aqua | aquamarine | azure | beige | bisque | black | blanchedalmond | blue | blueviolet | brown | burlywood | cadetblue | chartreuse | chocolate | coral | cornflowerblue | cornsilk | crimson | cyan | darkblue | darkcyan | darkgoldenrod | darkgray | darkgreen | darkgrey | darkkhaki | darkmagenta | darkolivegreen | darkorange | darkorchid | darkred | darksalmon | darkseagreen | darkslateblue | darkslategray | darkslategrey | darkturquoise | darkviolet | deeppink | deepskyblue | dimgray | dimgrey | dodgerblue | firebrick | floralwhite | forestgreen | fuchsia | gainsboro | ghostwhite | gold | goldenrod | gray | green | greenyellow | grey | honeydew | hotpink | indianred | indigo | ivory | khaki | lavender | lavenderblush | lawngreen | lemonchiffon | lightblue | lightcoral | lightcyan | lightgoldenrodyellow | lightgray | lightgreen | lightgrey | lightpink | lightsalmon | lightseagreen | lightskyblue | lightslategray | lightslategrey | lightsteelblue | lightyellow | lime | limegreen | linen | magenta | maroon | mediumaquamarine | mediumblue | mediumorchid | mediumpurple | mediumseagreen | mediumslateblue | mediumspringgreen | mediumturquoise | mediumvioletred | midnightblue | mintcream | mistyrose | moccasin | navajowhite | navy | oldlace | olive | olivedrab | orange | orangered | orchid | palegoldenrod | palegreen | paleturquoise | palevioletred | papayawhip | peachpuff | peru | pink | plum | powderblue | purple | rebeccapurple | red | rosybrown | royalblue | saddlebrown | salmon | sandybrown | seagreen | seashell | sienna | silver | skyblue | slateblue | slategray | slategrey | snow | springgreen | steelblue | tan | teal | thistle | tomato | turquoise | violet | wheat | white | whitesmoke | yellow | yellowgreen"
	},
		"namespace-prefix": {
		syntax: "<ident>"
	},
		"ns-prefix": {
		syntax: "[ <ident-token> | '*' ]? '|'"
	},
		"number-percentage": {
		syntax: "<number> | <percentage>"
	},
		"numeric-figure-values": {
		syntax: "[ lining-nums | oldstyle-nums ]"
	},
		"numeric-fraction-values": {
		syntax: "[ diagonal-fractions | stacked-fractions ]"
	},
		"numeric-spacing-values": {
		syntax: "[ proportional-nums | tabular-nums ]"
	},
		nth: nth,
		"opacity()": {
		syntax: "opacity( [ <number-percentage> ] )"
	},
		"overflow-position": {
		syntax: "unsafe | safe"
	},
		"outline-radius": {
		syntax: "<length> | <percentage>"
	},
		"page-body": {
		syntax: "<declaration>? [ ; <page-body> ]? | <page-margin-box> <page-body>"
	},
		"page-margin-box": {
		syntax: "<page-margin-box-type> {\n  <declaration-list>\n}"
	},
		"page-margin-box-type": {
		syntax: "@top-left-corner | @top-left | @top-center | @top-right | @top-right-corner | @bottom-left-corner | @bottom-left | @bottom-center | @bottom-right | @bottom-right-corner | @left-top | @left-middle | @left-bottom | @right-top | @right-middle | @right-bottom"
	},
		"page-selector-list": {
		syntax: "[ <page-selector># ]?"
	},
		"page-selector": {
		syntax: "<pseudo-page>+ | <ident> <pseudo-page>*"
	},
		"perspective()": {
		syntax: "perspective( <length> )"
	},
		"polygon()": {
		syntax: "polygon( <fill-rule>? , [ <length-percentage> <length-percentage> ]# )"
	},
		position: position$1,
		"pseudo-class-selector": {
		syntax: "':' <ident-token> | ':' <function-token> <any-value> ')'"
	},
		"pseudo-element-selector": {
		syntax: "':' <pseudo-class-selector>"
	},
		"pseudo-page": {
		syntax: ": [ left | right | first | blank ]"
	},
		quote: quote,
		"radial-gradient()": {
		syntax: "radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )"
	},
		"relative-size": {
		syntax: "larger | smaller"
	},
		"repeat-style": {
		syntax: "repeat-x | repeat-y | [ repeat | space | round | no-repeat ]{1,2}"
	},
		"repeating-linear-gradient()": {
		syntax: "repeating-linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )"
	},
		"repeating-radial-gradient()": {
		syntax: "repeating-radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )"
	},
		"rgb()": {
		syntax: "rgb( <percentage>{3} [ / <alpha-value> ]? ) | rgb( <number>{3} [ / <alpha-value> ]? ) | rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? )"
	},
		"rgba()": {
		syntax: "rgba( <percentage>{3} [ / <alpha-value> ]? ) | rgba( <number>{3} [ / <alpha-value> ]? ) | rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? )"
	},
		"rotate()": {
		syntax: "rotate( <angle> )"
	},
		"rotate3d()": {
		syntax: "rotate3d( <number> , <number> , <number> , <angle> )"
	},
		"rotateX()": {
		syntax: "rotateX( <angle> )"
	},
		"rotateY()": {
		syntax: "rotateY( <angle> )"
	},
		"rotateZ()": {
		syntax: "rotateZ( <angle> )"
	},
		"saturate()": {
		syntax: "saturate( <number-percentage> )"
	},
		"scale()": {
		syntax: "scale( <number> [, <number> ]? )"
	},
		"scale3d()": {
		syntax: "scale3d( <number> , <number> , <number> )"
	},
		"scaleX()": {
		syntax: "scaleX( <number> )"
	},
		"scaleY()": {
		syntax: "scaleY( <number> )"
	},
		"scaleZ()": {
		syntax: "scaleZ( <number> )"
	},
		"self-position": {
		syntax: "center | start | end | self-start | self-end | flex-start | flex-end"
	},
		"shape-radius": {
		syntax: "<length-percentage> | closest-side | farthest-side"
	},
		"skew()": {
		syntax: "skew( <angle> [, <angle> ]? )"
	},
		"skewX()": {
		syntax: "skewX( <angle> )"
	},
		"skewY()": {
		syntax: "skewY( <angle> )"
	},
		"sepia()": {
		syntax: "sepia( <number-percentage> )"
	},
		shadow: shadow,
		"shadow-t": {
		syntax: "[ <length>{2,3} && <color>? ]"
	},
		shape: shape$1,
		"shape-box": {
		syntax: "<box> | margin-box"
	},
		"side-or-corner": {
		syntax: "[ left | right ] || [ top | bottom ]"
	},
		"single-animation": {
		syntax: "<time> || <single-timing-function> || <time> || <single-animation-iteration-count> || <single-animation-direction> || <single-animation-fill-mode> || <single-animation-play-state> || [ none | <keyframes-name> ]"
	},
		"single-animation-direction": {
		syntax: "normal | reverse | alternate | alternate-reverse"
	},
		"single-animation-fill-mode": {
		syntax: "none | forwards | backwards | both"
	},
		"single-animation-iteration-count": {
		syntax: "infinite | <number>"
	},
		"single-animation-play-state": {
		syntax: "running | paused"
	},
		"single-timing-function": {
		syntax: "linear | <cubic-bezier-timing-function> | <step-timing-function> | <frames-timing-function>"
	},
		"single-transition": {
		syntax: "[ none | <single-transition-property> ] || <time> || <single-transition-timing-function> || <time>"
	},
		"single-transition-timing-function": {
		syntax: "<single-timing-function>"
	},
		"single-transition-property": {
		syntax: "all | <custom-ident>"
	},
		size: size,
		"step-timing-function": {
		syntax: "step-start | step-end | steps(<integer>[, [ start | end ] ]?)"
	},
		"subclass-selector": {
		syntax: "<id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector>"
	},
		symbol: symbol,
		target: target,
		"target-counter()": {
		syntax: "target-counter( [ <string> | <url> ] , <custom-ident> , <counter-style>? )"
	},
		"target-counters()": {
		syntax: "target-counters( [ <string> | <url> ] , <custom-ident> , <string> , <counter-style>? )"
	},
		"target-text()": {
		syntax: "target-text( [ <string> | <url> ] , [ content | before | after | first-letter ]? )"
	},
		"time-percentage": {
		syntax: "<time> | <percentage>"
	},
		"track-breadth": {
		syntax: "<length-percentage> | <flex> | min-content | max-content | auto"
	},
		"track-list": {
		syntax: "[ <line-names>? [ <track-size> | <track-repeat> ] ]+ <line-names>?"
	},
		"track-repeat": {
		syntax: "repeat( [ <positive-integer> ] , [ <line-names>? <track-size> ]+ <line-names>? )"
	},
		"track-size": {
		syntax: "<track-breadth> | minmax( <inflexible-breadth> , <track-breadth> ) | fit-content( [ <length> | <percentage> ] )"
	},
		"transform-function": {
		syntax: "<matrix()> | <translate()> | <translateX()> | <translateY()> | <scale()> | <scaleX()> | <scaleY()> | <rotate()> | <skew()> | <skewX()> | <skewY()> | <matrix3d()> | <translate3d()> | <translateZ()> | <scale3d()> | <scaleZ()> | <rotate3d()> | <rotateX()> | <rotateY()> | <rotateZ()> | <perspective()>"
	},
		"transform-list": {
		syntax: "<transform-function>+"
	},
		"translate()": {
		syntax: "translate( <length-percentage> [, <length-percentage> ]? )"
	},
		"translate3d()": {
		syntax: "translate3d( <length-percentage> , <length-percentage> , <length> )"
	},
		"translateX()": {
		syntax: "translateX( <length-percentage> )"
	},
		"translateY()": {
		syntax: "translateY( <length-percentage> )"
	},
		"translateZ()": {
		syntax: "translateZ( <length> )"
	},
		"type-or-unit": {
		syntax: "string | integer | color | url | integer | number | length | angle | time | frequency | em | ex | px | rem | vw | vh | vmin | vmax | mm | q | cm | in | pt | pc | deg | grad | rad | ms | s | Hz | kHz | %"
	},
		"type-selector": {
		syntax: "<wq-name> | <ns-prefix>? '*'"
	},
		"var()": {
		syntax: "var( <custom-property-name> [, <declaration-value> ]? )"
	},
		"viewport-length": {
		syntax: "auto | <length-percentage>"
	},
		"wq-name": {
		syntax: "<ns-prefix>? <ident-token>"
	}
	};

	var syntaxes$1 = /*#__PURE__*/Object.freeze({
		attachment: attachment,
		box: box,
		color: color$1,
		gradient: gradient,
		hue: hue,
		image: image,
		nth: nth,
		position: position$1,
		quote: quote,
		shadow: shadow,
		shape: shape$1,
		size: size,
		symbol: symbol,
		target: target,
		default: syntaxes
	});

	var properties$3 = {
		"--*": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"-moz-background-clip": {
			comment: "deprecated syntax in old Firefox, https://developer.mozilla.org/en/docs/Web/CSS/background-clip",
			syntax: "padding | border"
		},
		"-moz-border-radius-bottomleft": {
			comment: "https://developer.mozilla.org/en-US/docs/Web/CSS/border-bottom-left-radius",
			syntax: "<'border-bottom-left-radius'>"
		},
		"-moz-border-radius-bottomright": {
			comment: "https://developer.mozilla.org/en-US/docs/Web/CSS/border-bottom-right-radius",
			syntax: "<'border-bottom-right-radius'>"
		},
		"-moz-border-radius-topleft": {
			comment: "https://developer.mozilla.org/en-US/docs/Web/CSS/border-top-left-radius",
			syntax: "<'border-top-left-radius'>"
		},
		"-moz-border-radius-topright": {
			comment: "https://developer.mozilla.org/en-US/docs/Web/CSS/border-bottom-right-radius",
			syntax: "<'border-bottom-right-radius'>"
		},
		"-moz-osx-font-smoothing": {
			comment: "misssed old syntax https://developer.mozilla.org/en-US/docs/Web/CSS/font-smooth",
			syntax: "auto | grayscale"
		},
		"-moz-user-select": {
			comment: "https://developer.mozilla.org/en-US/docs/Web/CSS/user-select",
			syntax: "none | text | all | -moz-none"
		},
		"-ms-flex-align": {
			comment: "misssed old syntax implemented in IE, https://www.w3.org/TR/2012/WD-css3-flexbox-20120322/#flex-align",
			syntax: "start | end | center | baseline | stretch"
		},
		"-ms-flex-item-align": {
			comment: "misssed old syntax implemented in IE, https://www.w3.org/TR/2012/WD-css3-flexbox-20120322/#flex-align",
			syntax: "auto | start | end | center | baseline | stretch"
		},
		"-ms-flex-line-pack": {
			comment: "misssed old syntax implemented in IE, https://www.w3.org/TR/2012/WD-css3-flexbox-20120322/#flex-line-pack",
			syntax: "start | end | center | justify | distribute | stretch"
		},
		"-ms-flex-negative": {
			comment: "misssed old syntax implemented in IE; TODO: find references for comfirmation",
			syntax: "<'flex-shrink'>"
		},
		"-ms-flex-pack": {
			comment: "misssed old syntax implemented in IE, https://www.w3.org/TR/2012/WD-css3-flexbox-20120322/#flex-pack",
			syntax: "start | end | center | justify | distribute"
		},
		"-ms-flex-order": {
			comment: "misssed old syntax implemented in IE; https://msdn.microsoft.com/en-us/library/jj127303(v=vs.85).aspx",
			syntax: "<integer>"
		},
		"-ms-flex-positive": {
			comment: "misssed old syntax implemented in IE; TODO: find references for comfirmation",
			syntax: "<'flex-grow'>"
		},
		"-ms-flex-preferred-size": {
			comment: "misssed old syntax implemented in IE; TODO: find references for comfirmation",
			syntax: "<'flex-basis'>"
		},
		"-ms-interpolation-mode": {
			comment: "https://msdn.microsoft.com/en-us/library/ff521095(v=vs.85).aspx",
			syntax: "nearest-neighbor | bicubic"
		},
		"-ms-grid-column-align": {
			comment: "add this property first since it uses as fallback for flexbox, https://msdn.microsoft.com/en-us/library/windows/apps/hh466338.aspx",
			syntax: "start | end | center | stretch"
		},
		"-ms-grid-row-align": {
			comment: "add this property first since it uses as fallback for flexbox, https://msdn.microsoft.com/en-us/library/windows/apps/hh466348.aspx",
			syntax: "start | end | center | stretch"
		},
		"-webkit-appearance": {
			comment: "webkit specific keywords",
			references: [
				"http://css-infos.net/property/-webkit-appearance"
			],
			syntax: "none | button | button-bevel | caps-lock-indicator | caret | checkbox | default-button | listbox | listitem | media-fullscreen-button | media-mute-button | media-play-button | media-seek-back-button | media-seek-forward-button | media-slider | media-sliderthumb | menulist | menulist-button | menulist-text | menulist-textfield | push-button | radio | scrollbarbutton-down | scrollbarbutton-left | scrollbarbutton-right | scrollbarbutton-up | scrollbargripper-horizontal | scrollbargripper-vertical | scrollbarthumb-horizontal | scrollbarthumb-vertical | scrollbartrack-horizontal | scrollbartrack-vertical | searchfield | searchfield-cancel-button | searchfield-decoration | searchfield-results-button | searchfield-results-decoration | slider-horizontal | slider-vertical | sliderthumb-horizontal | sliderthumb-vertical | square-button | textarea | textfield"
		},
		"-webkit-background-clip": {
			comment: "https://developer.mozilla.org/en/docs/Web/CSS/background-clip",
			syntax: "[ <box> | border | padding | content | text ]#"
		},
		"-webkit-column-break-after": {
			comment: "added, http://help.dottoro.com/lcrthhhv.php",
			syntax: "always | auto | avoid"
		},
		"-webkit-column-break-before": {
			comment: "added, http://help.dottoro.com/lcxquvkf.php",
			syntax: "always | auto | avoid"
		},
		"-webkit-column-break-inside": {
			comment: "added, http://help.dottoro.com/lclhnthl.php",
			syntax: "always | auto | avoid"
		},
		"-webkit-font-smoothing": {
			comment: "https://developer.mozilla.org/en-US/docs/Web/CSS/font-smooth",
			syntax: "auto | none | antialiased | subpixel-antialiased"
		},
		"-webkit-line-clamp": {
			comment: "non-standard and deprecated but may still using by some sites",
			syntax: "<positive-integer>"
		},
		"-webkit-mask-box-image": {
			comment: "missed; https://developer.mozilla.org/en-US/docs/Web/CSS/-webkit-mask-box-image",
			syntax: "[ <url> | <gradient> | none ] [ <length-percentage>{4} <-webkit-mask-box-repeat>{2} ]?"
		},
		"-webkit-mask-clip": {
			comment: "change type to <-webkit-mask-clip-style> since it differ from <mask-clip>, extra space between [ and ,",
			syntax: "<-webkit-mask-clip-style> [, <-webkit-mask-clip-style> ]*"
		},
		"-webkit-print-color-adjust": {
			comment: "missed",
			references: [
				"https://developer.mozilla.org/en/docs/Web/CSS/-webkit-print-color-adjust"
			],
			syntax: "economy | exact"
		},
		"-webkit-text-security": {
			comment: "missed; http://help.dottoro.com/lcbkewgt.php",
			syntax: "none | circle | disc | square"
		},
		"-webkit-user-drag": {
			comment: "missed; http://help.dottoro.com/lcbixvwm.php",
			syntax: "none | element | auto"
		},
		"-webkit-user-select": {
			comment: "auto is supported by old webkit, https://developer.mozilla.org/en-US/docs/Web/CSS/user-select",
			syntax: "auto | none | text | all"
		},
		"alignment-baseline": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/text.html#AlignmentBaselineProperty"
			],
			syntax: "auto | baseline | before-edge | text-before-edge | middle | central | after-edge | text-after-edge | ideographic | alphabetic | hanging | mathematical"
		},
		"baseline-shift": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/text.html#BaselineShiftProperty"
			],
			syntax: "baseline | sub | super | <svg-length>"
		},
		behavior: {
			comment: "added old IE property https://msdn.microsoft.com/en-us/library/ms530723(v=vs.85).aspx",
			syntax: "<url>+"
		},
		"clip-rule": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/masking.html#ClipRuleProperty"
			],
			syntax: "nonzero | evenodd"
		},
		cue: {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<'cue-before'> <'cue-after'>?"
		},
		"cue-after": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<url> <decibel>? | none"
		},
		"cue-before": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<url> <decibel>? | none"
		},
		cursor: {
			comment: "added legacy keywords: hand, -webkit-grab. -webkit-grabbing, -webkit-zoom-in, -webkit-zoom-out, -moz-grab, -moz-grabbing, -moz-zoom-in, -moz-zoom-out",
			refenrences: [
				"https://www.sitepoint.com/css3-cursor-styles/"
			],
			syntax: "[ [ <url> [ <x> <y> ]? , ]* [ auto | default | none | context-menu | help | pointer | progress | wait | cell | crosshair | text | vertical-text | alias | copy | move | no-drop | not-allowed | e-resize | n-resize | ne-resize | nw-resize | s-resize | se-resize | sw-resize | w-resize | ew-resize | ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | all-scroll | zoom-in | zoom-out | grab | grabbing | hand | -webkit-grab | -webkit-grabbing | -webkit-zoom-in | -webkit-zoom-out | -moz-grab | -moz-grabbing | -moz-zoom-in | -moz-zoom-out ] ]"
		},
		display: {
			comment: "extended with -ms-flexbox",
			syntax: "none | inline | block | list-item | inline-list-item | inline-block | inline-table | table | table-cell | table-column | table-column-group | table-footer-group | table-header-group | table-row | table-row-group | flex | inline-flex | grid | inline-grid | run-in | ruby | ruby-base | ruby-text | ruby-base-container | ruby-text-container | contents | -ms-flexbox | -ms-inline-flexbox | -ms-grid | -ms-inline-grid | -webkit-flex | -webkit-inline-flex | -webkit-box | -webkit-inline-box | -moz-inline-stack | -moz-box | -moz-inline-box"
		},
		position: {
			comment: "extended with -webkit-sticky",
			syntax: "static | relative | absolute | sticky | fixed | -webkit-sticky"
		},
		"dominant-baseline": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/text.html#DominantBaselineProperty"
			],
			syntax: "auto | use-script | no-change | reset-size | ideographic | alphabetic | hanging | mathematical | central | middle | text-after-edge | text-before-edge"
		},
		"image-rendering": {
			comment: "extended with <-non-standard-image-rendering>, added SVG keywords optimizeSpeed and optimizeQuality",
			references: [
				"https://developer.mozilla.org/en/docs/Web/CSS/image-rendering",
				"https://www.w3.org/TR/SVG/painting.html#ImageRenderingProperty"
			],
			syntax: "auto | crisp-edges | pixelated | optimizeSpeed | optimizeQuality | <-non-standard-image-rendering>"
		},
		fill: {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#FillProperty"
			],
			syntax: "<paint>"
		},
		"fill-opacity": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#FillProperty"
			],
			syntax: "<number-zero-one>"
		},
		"fill-rule": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#FillProperty"
			],
			syntax: "nonzero | evenodd"
		},
		filter: {
			comment: "extend with IE legacy syntaxes",
			syntax: "none | <filter-function-list> | <-ms-filter>"
		},
		font: {
			comment: "extend with non-standard fonts",
			syntax: "[ [ <'font-style'> || <font-variant-css21> || <'font-weight'> || <'font-stretch'> ]? <'font-size'> [ / <'line-height'> ]? <'font-family'> ] | caption | icon | menu | message-box | small-caption | status-bar | <-non-standard-font>"
		},
		"glyph-orientation-horizontal": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/text.html#GlyphOrientationHorizontalProperty"
			],
			syntax: "<angle>"
		},
		"glyph-orientation-vertical": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/text.html#GlyphOrientationVerticalProperty"
			],
			syntax: "<angle>"
		},
		kerning: {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/text.html#KerningProperty"
			],
			syntax: "auto | <svg-length>"
		},
		"letter-spacing": {
			comment: "fix syntax <length> -> <length-percentage>",
			references: [
				"https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/letter-spacing"
			],
			syntax: "normal | <length-percentage>"
		},
		"line-height-step": {
			comment: "fix extra spaces around",
			syntax: "none | <length>"
		},
		marker: {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#MarkerProperties"
			],
			syntax: "none | <url>"
		},
		"marker-end": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#MarkerProperties"
			],
			syntax: "none | <url>"
		},
		"marker-mid": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#MarkerProperties"
			],
			syntax: "none | <url>"
		},
		"marker-start": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#MarkerProperties"
			],
			syntax: "none | <url>"
		},
		"max-width": {
			comment: "extend by non-standard width keywords https://developer.mozilla.org/en-US/docs/Web/CSS/max-width",
			syntax: "<length> | <percentage> | none | max-content | min-content | fit-content | fill-available | <-non-standard-width>"
		},
		"min-width": {
			comment: "extend by non-standard width keywords https://developer.mozilla.org/en-US/docs/Web/CSS/width",
			syntax: "<length> | <percentage> | auto | max-content | min-content | fit-content | fill-available | <-non-standard-width>"
		},
		opacity: {
			comment: "strict to 0..1 <number> -> <number-zero-one>",
			syntax: "<number-zero-one>"
		},
		overflow: {
			comment: "extend by vendor keywords https://developer.mozilla.org/en-US/docs/Web/CSS/overflow",
			syntax: "visible | hidden | scroll | auto | <-non-standard-overflow>"
		},
		pause: {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<'pause-before'> <'pause-after'>?"
		},
		"pause-after": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<time> | none | x-weak | weak | medium | strong | x-strong"
		},
		"pause-before": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<time> | none | x-weak | weak | medium | strong | x-strong"
		},
		rest: {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<'rest-before'> <'rest-after'>?"
		},
		"rest-after": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<time> | none | x-weak | weak | medium | strong | x-strong"
		},
		"rest-before": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<time> | none | x-weak | weak | medium | strong | x-strong"
		},
		"shape-rendering": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#ShapeRenderingPropert"
			],
			syntax: "auto | optimizeSpeed | crispEdges | geometricPrecision"
		},
		src: {
			comment: "added @font-face's src property https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/src",
			syntax: "[ <url> [ format( <string># ) ]? | local( <family-name> ) ]#"
		},
		speak: {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "auto | none | normal"
		},
		"speak-as": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "normal | spell-out || digits || [ literal-punctuation | no-punctuation ]"
		},
		stroke: {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#StrokeProperties"
			],
			syntax: "<paint>"
		},
		"stroke-dasharray": {
			comment: "added SVG property; a list of comma and/or white space separated <length>s and <percentage>s",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#StrokeProperties"
			],
			syntax: "none | [ <svg-length>+ ]#"
		},
		"stroke-dashoffset": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#StrokeProperties"
			],
			syntax: "<svg-length>"
		},
		"stroke-linecap": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#StrokeProperties"
			],
			syntax: "butt | round | square"
		},
		"stroke-linejoin": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#StrokeProperties"
			],
			syntax: "miter | round | bevel"
		},
		"stroke-miterlimit": {
			comment: "added SVG property (<miterlimit> = <number-one-or-greater>) ",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#StrokeProperties"
			],
			syntax: "<number-one-or-greater>"
		},
		"stroke-opacity": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#StrokeProperties"
			],
			syntax: "<number-zero-one>"
		},
		"stroke-width": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/painting.html#StrokeProperties"
			],
			syntax: "<svg-length>"
		},
		"text-anchor": {
			comment: "added SVG property",
			references: [
				"https://www.w3.org/TR/SVG/text.html#TextAlignmentProperties"
			],
			syntax: "start | middle | end"
		},
		"transform-origin": {
			comment: "move first group to the end since less collecting",
			syntax: "[ [ <length-percentage> | left | center | right ] && [ <length-percentage> | top | center | bottom ] ] <length>? | [ <length-percentage> | left | center | right | top | bottom ]"
		},
		"unicode-bidi": {
			comment: "added prefixed keywords https://developer.mozilla.org/en-US/docs/Web/CSS/unicode-bidi",
			syntax: "normal | embed | isolate | bidi-override | isolate-override | plaintext | -moz-isolate | -moz-isolate-override | -moz-plaintext | -webkit-isolate"
		},
		"unicode-range": {
			comment: "added missed property https://developer.mozilla.org/en-US/docs/Web/CSS/%40font-face/unicode-range",
			syntax: "<unicode-range>#"
		},
		"voice-balance": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<number> | left | center | right | leftwards | rightwards"
		},
		"voice-duration": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "auto | <time>"
		},
		"voice-family": {
			comment: "<name> -> <family-name>, https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "[ [ <family-name> | <generic-voice> ] , ]* [ <family-name> | <generic-voice> ] | preserve"
		},
		"voice-pitch": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<frequency> && absolute | [ [ x-low | low | medium | high | x-high ] || [ <frequency> | <semitones> | <percentage> ] ]"
		},
		"voice-range": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "<frequency> && absolute | [ [ x-low | low | medium | high | x-high ] || [ <frequency> | <semitones> | <percentage> ] ]"
		},
		"voice-rate": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "[ normal | x-slow | slow | medium | fast | x-fast ] || <percentage>"
		},
		"voice-stress": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "normal | strong | moderate | none | reduced"
		},
		"voice-volume": {
			comment: "https://www.w3.org/TR/css3-speech/#property-index",
			syntax: "silent | [ [ x-soft | soft | medium | loud | x-loud ] || <decibel> ]"
		},
		"word-break": {
			comment: "extend with non-standard keywords",
			syntax: "normal | break-all | keep-all | <-non-standard-word-break>"
		},
		"writing-mode": {
			comment: "extend with SVG keywords",
			syntax: "horizontal-tb | vertical-rl | vertical-lr | sideways-rl | sideways-lr | <svg-writing-mode>"
		}
	};
	var syntaxes$2 = {
		"-legacy-gradient": {
			comment: "added collection of legacy gradient syntaxes",
			syntax: "<-webkit-gradient()> | <-legacy-linear-gradient> | <-legacy-repeating-linear-gradient> | <-legacy-radial-gradient> | <-legacy-repeating-radial-gradient>"
		},
		"-legacy-linear-gradient": {
			comment: "like standard syntax but w/o `to` keyword https://developer.mozilla.org/en-US/docs/Web/CSS/linear-gradient",
			syntax: "-moz-linear-gradient( <-legacy-linear-gradient-arguments> ) | -webkit-linear-gradient( <-legacy-linear-gradient-arguments> ) | -o-linear-gradient( <-legacy-linear-gradient-arguments> )"
		},
		"-legacy-repeating-linear-gradient": {
			comment: "like standard syntax but w/o `to` keyword https://developer.mozilla.org/en-US/docs/Web/CSS/linear-gradient",
			syntax: "-moz-repeating-linear-gradient( <-legacy-linear-gradient-arguments> ) | -webkit-repeating-linear-gradient( <-legacy-linear-gradient-arguments> ) | -o-repeating-linear-gradient( <-legacy-linear-gradient-arguments> )"
		},
		"-legacy-linear-gradient-arguments": {
			comment: "like standard syntax but w/o `to` keyword https://developer.mozilla.org/en-US/docs/Web/CSS/linear-gradient",
			syntax: "[ <angle> | <side-or-corner> ]? , <color-stop-list>"
		},
		"-legacy-radial-gradient": {
			comment: "deprecated syntax that implemented by some browsers https://www.w3.org/TR/2011/WD-css3-images-20110908/#radial-gradients",
			syntax: "-moz-radial-gradient( <-legacy-radial-gradient-arguments> ) | -webkit-radial-gradient( <-legacy-radial-gradient-arguments> ) | -o-radial-gradient( <-legacy-radial-gradient-arguments> )"
		},
		"-legacy-repeating-radial-gradient": {
			comment: "deprecated syntax that implemented by some browsers https://www.w3.org/TR/2011/WD-css3-images-20110908/#radial-gradients",
			syntax: "-moz-repeating-radial-gradient( <-legacy-radial-gradient-arguments> ) | -webkit-repeating-radial-gradient( <-legacy-radial-gradient-arguments> ) | -o-repeating-radial-gradient( <-legacy-radial-gradient-arguments> )"
		},
		"-legacy-radial-gradient-arguments": {
			comment: "deprecated syntax that implemented by some browsers https://www.w3.org/TR/2011/WD-css3-images-20110908/#radial-gradients",
			syntax: "[ <position> , ]? [ [ [ <-legacy-radial-gradient-shape> || <-legacy-radial-gradient-size> ] | [ <length> | <percentage> ]{2} ] , ]? <color-stop-list>"
		},
		"-legacy-radial-gradient-size": {
			comment: "before a standard it contains 2 extra keywords (`contain` and `cover`) https://www.w3.org/TR/2011/WD-css3-images-20110908/#ltsize",
			syntax: "closest-side | closest-corner | farthest-side | farthest-corner | contain | cover"
		},
		"-legacy-radial-gradient-shape": {
			comment: "define to duoble sure it doesn't extends in future https://www.w3.org/TR/2011/WD-css3-images-20110908/#ltshape",
			syntax: "circle | ellipse"
		},
		"-non-standard-font": {
			comment: "non standard fonts",
			preferences: [
				"https://webkit.org/blog/3709/using-the-system-font-in-web-content/"
			],
			syntax: "-apple-system-body | -apple-system-headline | -apple-system-subheadline | -apple-system-caption1 | -apple-system-caption2 | -apple-system-footnote | -apple-system-short-body | -apple-system-short-headline | -apple-system-short-subheadline | -apple-system-short-caption1 | -apple-system-short-footnote | -apple-system-tall-body"
		},
		"-non-standard-color": {
			comment: "non standard colors",
			references: [
				"http://cssdot.ru/%D0%A1%D0%BF%D1%80%D0%B0%D0%B2%D0%BE%D1%87%D0%BD%D0%B8%D0%BA_CSS/color-i305.html",
				"https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#Mozilla_Color_Preference_Extensions"
			],
			syntax: "-moz-ButtonDefault | -moz-ButtonHoverFace | -moz-ButtonHoverText | -moz-CellHighlight | -moz-CellHighlightText | -moz-Combobox | -moz-ComboboxText | -moz-Dialog | -moz-DialogText | -moz-dragtargetzone | -moz-EvenTreeRow | -moz-Field | -moz-FieldText | -moz-html-CellHighlight | -moz-html-CellHighlightText | -moz-mac-accentdarkestshadow | -moz-mac-accentdarkshadow | -moz-mac-accentface | -moz-mac-accentlightesthighlight | -moz-mac-accentlightshadow | -moz-mac-accentregularhighlight | -moz-mac-accentregularshadow | -moz-mac-chrome-active | -moz-mac-chrome-inactive | -moz-mac-focusring | -moz-mac-menuselect | -moz-mac-menushadow | -moz-mac-menutextselect | -moz-MenuHover | -moz-MenuHoverText | -moz-MenuBarText | -moz-MenuBarHoverText | -moz-nativehyperlinktext | -moz-OddTreeRow | -moz-win-communicationstext | -moz-win-mediatext | -moz-activehyperlinktext | -moz-default-background-color | -moz-default-color | -moz-hyperlinktext | -moz-visitedhyperlinktext | -webkit-activelink | -webkit-focus-ring-color | -webkit-link | -webkit-text"
		},
		"-non-standard-image-rendering": {
			comment: "non-standard keywords http://phrogz.net/tmp/canvas_image_zoom.html",
			syntax: "optimize-contrast | -moz-crisp-edges | -o-crisp-edges | -webkit-optimize-contrast"
		},
		"-non-standard-overflow": {
			comment: "non-standard keywords https://developer.mozilla.org/en-US/docs/Web/CSS/overflow",
			syntax: "-moz-scrollbars-none | -moz-scrollbars-horizontal | -moz-scrollbars-vertical | -moz-hidden-unscrollable"
		},
		"-non-standard-width": {
			comment: "non-standard keywords https://developer.mozilla.org/en-US/docs/Web/CSS/width",
			syntax: "min-intrinsic | intrinsic | -moz-min-content | -moz-max-content | -webkit-min-content | -webkit-max-content"
		},
		"-non-standard-word-break": {
			comment: "non-standard keywords https://css-tricks.com/almanac/properties/w/word-break/",
			syntax: "break-word"
		},
		"-webkit-gradient()": {
			comment: "first Apple proposal gradient syntax https://webkit.org/blog/175/introducing-css-gradients/ - TODO: simplify when after match algorithm improvement ( [, point, radius | , point] -> [, radius]? , point )",
			syntax: "-webkit-gradient( <-webkit-gradient-type>, <-webkit-gradient-point> [, <-webkit-gradient-point> | , <-webkit-gradient-radius>, <-webkit-gradient-point> ] [, <-webkit-gradient-radius>]? [, <-webkit-gradient-color-stop>]* )"
		},
		"-webkit-gradient-color-stop": {
			comment: "first Apple proposal gradient syntax https://webkit.org/blog/175/introducing-css-gradients/",
			syntax: "from( <color> ) | color-stop( [ <number-zero-one> | <percentage> ] , <color> ) | to( <color> )"
		},
		"-webkit-gradient-point": {
			comment: "first Apple proposal gradient syntax https://webkit.org/blog/175/introducing-css-gradients/",
			syntax: "[ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ]"
		},
		"-webkit-gradient-radius": {
			comment: "first Apple proposal gradient syntax https://webkit.org/blog/175/introducing-css-gradients/",
			syntax: "<length> | <percentage>"
		},
		"-webkit-gradient-type": {
			comment: "first Apple proposal gradient syntax https://webkit.org/blog/175/introducing-css-gradients/",
			syntax: "linear | radial"
		},
		"-webkit-mask-box-repeat": {
			comment: "missed; https://developer.mozilla.org/en-US/docs/Web/CSS/-webkit-mask-box-image",
			syntax: "repeat | stretch | round"
		},
		"-webkit-mask-clip-style": {
			comment: "missed; there is no enough information about `-webkit-mask-clip` property, but looks like all those keywords are working",
			syntax: "border | border-box | padding | padding-box | content | content-box | text"
		},
		"-ms-filter": {
			syntax: "[ <progid> | FlipH | FlipV ]+"
		},
		age: {
			comment: "https://www.w3.org/TR/css3-speech/#voice-family",
			syntax: "child | young | old"
		},
		"attr()": {
			comment: "drop it since it's a generic",
			syntax: null
		},
		"border-radius": {
			comment: "missed, https://drafts.csswg.org/css-backgrounds-3/#the-border-radius",
			syntax: "<length-percentage>{1,2}"
		},
		bottom: {
			comment: "missed; not sure we should add it, but no others except `shape` is using it so it's ok for now; https://drafts.fxtf.org/css-masking-1/#funcdef-clip-rect",
			syntax: "<length> | auto"
		},
		"content-list": {
			comment: "missed -> https://drafts.csswg.org/css-content/#typedef-content-list (document-url, <target> and leader() is omitted util stabilization)",
			syntax: "[ <string> | contents | <url> | <quote> | <attr()> | counter( <ident>, <'list-style-type'>? ) ]+"
		},
		"inset()": {
			comment: "changed <border-radius> to <'border-radius'>",
			syntax: "inset( <length-percentage>{1,4} [ round <'border-radius'> ]? )"
		},
		"generic-voice": {
			comment: "https://www.w3.org/TR/css3-speech/#voice-family",
			syntax: "[ <age>? <gender> <integer>? ]"
		},
		gender: {
			comment: "https://www.w3.org/TR/css3-speech/#voice-family",
			syntax: "male | female | neutral"
		},
		"generic-family": {
			comment: "added -apple-system",
			references: [
				"https://webkit.org/blog/3709/using-the-system-font-in-web-content/"
			],
			syntax: "serif | sans-serif | cursive | fantasy | monospace | -apple-system"
		},
		gradient: {
			comment: "added -webkit-gradient() since may to be used for legacy support",
			syntax: "<-legacy-gradient> | <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()>"
		},
		left: {
			comment: "missed; not sure we should add it, but no others except `shape` is using it so it's ok for now; https://drafts.fxtf.org/css-masking-1/#funcdef-clip-rect",
			syntax: "<length> | auto"
		},
		"mask-image": {
			comment: "missed; https://drafts.fxtf.org/css-masking-1/#the-mask-image",
			syntax: "<mask-reference>#"
		},
		"matrix()": {
			comment: "redundant max",
			syntax: "matrix( <number> [, <number> ]{5} )"
		},
		"matrix3d()": {
			comment: "redundant max",
			syntax: "matrix3d( <number> [, <number> ]{15} )"
		},
		"name-repeat": {
			comment: "missed, and looks like obsolete, keep it as is since other property syntaxes should be changed too; https://www.w3.org/TR/2015/WD-css-grid-1-20150917/#typedef-name-repeat",
			syntax: "repeat( [ <positive-integer> | auto-fill ], <line-names>+)"
		},
		"named-color": {
			comment: "replaced <ident> to list of colors according to https://www.w3.org/TR/css-color-4/#named-colors",
			syntax: "transparent | aliceblue | antiquewhite | aqua | aquamarine | azure | beige | bisque | black | blanchedalmond | blue | blueviolet | brown | burlywood | cadetblue | chartreuse | chocolate | coral | cornflowerblue | cornsilk | crimson | cyan | darkblue | darkcyan | darkgoldenrod | darkgray | darkgreen | darkgrey | darkkhaki | darkmagenta | darkolivegreen | darkorange | darkorchid | darkred | darksalmon | darkseagreen | darkslateblue | darkslategray | darkslategrey | darkturquoise | darkviolet | deeppink | deepskyblue | dimgray | dimgrey | dodgerblue | firebrick | floralwhite | forestgreen | fuchsia | gainsboro | ghostwhite | gold | goldenrod | gray | green | greenyellow | grey | honeydew | hotpink | indianred | indigo | ivory | khaki | lavender | lavenderblush | lawngreen | lemonchiffon | lightblue | lightcoral | lightcyan | lightgoldenrodyellow | lightgray | lightgreen | lightgrey | lightpink | lightsalmon | lightseagreen | lightskyblue | lightslategray | lightslategrey | lightsteelblue | lightyellow | lime | limegreen | linen | magenta | maroon | mediumaquamarine | mediumblue | mediumorchid | mediumpurple | mediumseagreen | mediumslateblue | mediumspringgreen | mediumturquoise | mediumvioletred | midnightblue | mintcream | mistyrose | moccasin | navajowhite | navy | oldlace | olive | olivedrab | orange | orangered | orchid | palegoldenrod | palegreen | paleturquoise | palevioletred | papayawhip | peachpuff | peru | pink | plum | powderblue | purple | rebeccapurple | red | rosybrown | royalblue | saddlebrown | salmon | sandybrown | seagreen | seashell | sienna | silver | skyblue | slateblue | slategray | slategrey | snow | springgreen | steelblue | tan | teal | thistle | tomato | turquoise | violet | wheat | white | whitesmoke | yellow | yellowgreen | <-non-standard-color>"
		},
		"outline-radius": {
			comment: "missed, looks like it's a similar to <border-radius> https://developer.mozilla.org/en/docs/Web/CSS/-moz-outline-radius",
			syntax: "<border-radius>"
		},
		paint: {
			comment: "simplified SVG syntax (omit <icccolor>, replace <funciri> for <url>) https://www.w3.org/TR/SVG/painting.html#SpecifyingPaint",
			syntax: "none | currentColor | <color> | <url> [ none | currentColor | <color> ]?"
		},
		"path()": {
			comment: "missed, `motion` property was renamed, but left it as is for now; path() syntax was get from last draft https://drafts.fxtf.org/motion-1/#funcdef-offset-path-path",
			syntax: "path( <string> )"
		},
		right: {
			comment: "missed; not sure we should add it, but no others except `shape` is using it so it's ok for now; https://drafts.fxtf.org/css-masking-1/#funcdef-clip-rect",
			syntax: "<length> | auto"
		},
		shape: {
			comment: "missed spaces in function body and add backwards compatible syntax",
			syntax: "rect( [ [ <top>, <right>, <bottom>, <left> ] | [ <top> <right> <bottom> <left> ] ] )"
		},
		"single-transition": {
			comment: "moved <single-transition-timing-function> in the beginning to avoid wrong match to <single-transition-property>",
			syntax: "<single-transition-timing-function> || [ none | <single-transition-property> ] || <time> || <time>"
		},
		"svg-length": {
			comment: "All coordinates and lengths in SVG can be specified with or without a unit identifier",
			references: [
				"https://www.w3.org/TR/SVG11/coords.html#Units"
			],
			syntax: "<percentage> | <length> | <number>"
		},
		"svg-writing-mode": {
			comment: "SVG specific keywords (deprecated for CSS)",
			references: [
				"https://developer.mozilla.org/en/docs/Web/CSS/writing-mode",
				"https://www.w3.org/TR/SVG/text.html#WritingModeProperty"
			],
			syntax: "lr-tb | rl-tb | tb-rl | lr | rl | tb"
		},
		top: {
			comment: "missed; not sure we should add it, but no others except `shape` is using it so it's ok for now; https://drafts.fxtf.org/css-masking-1/#funcdef-clip-rect",
			syntax: "<length> | auto"
		},
		x: {
			comment: "missed; not sure we should add it, but no others except `cursor` is using it so it's ok for now; https://drafts.csswg.org/css-ui-3/#cursor",
			syntax: "<number>"
		},
		y: {
			comment: "missed; not sure we should add it, but no others except `cursor` is using so it's ok for now; https://drafts.csswg.org/css-ui-3/#cursor",
			syntax: "<number>"
		},
		"var()": {
			comment: "drop it since it's a generic (also syntax is incorrect and can't be parsed)",
			syntax: null
		},
		"an-plus-b": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"feature-type": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"feature-value-block": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"feature-value-declaration": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"feature-value-block-list": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"feature-value-declaration-list": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"general-enclosed": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"keyframe-block": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"keyframe-block-list": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"mf-plain": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"mf-range": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"mf-value": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-and": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-condition": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-not": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-or": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-in-parens": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-feature": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-condition-without-or": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-query": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"media-query-list": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		nth: {
			comment: "syntax has <an-plus-b> that doesn't support currently, drop for now",
			syntax: null
		},
		"page-selector": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"page-selector-list": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"page-body": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"page-margin-box": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"page-margin-box-type": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		},
		"pseudo-page": {
			comment: "syntax is incorrect and can't be parsed, drop for now",
			syntax: null
		}
	};
	var patch = {
		properties: properties$3,
		syntaxes: syntaxes$2
	};

	var patch$1 = /*#__PURE__*/Object.freeze({
		properties: properties$3,
		syntaxes: syntaxes$2,
		default: patch
	});

	var mdnProperties = getCjsExportFromNamespace(properties$2);

	var mdnSyntaxes = getCjsExportFromNamespace(syntaxes$1);

	var patch$2 = getCjsExportFromNamespace(patch$1);

	function buildDictionary(dict, patchDict) {
	    var result = {};

	    // copy all syntaxes for an original dict
	    for (var key in dict) {
	        result[key] = dict[key].syntax;
	    }

	    // apply a patch
	    for (var key in patchDict) {
	        if (key in dict) {
	            if (patchDict[key].syntax) {
	                result[key] = patchDict[key].syntax;
	            } else {
	                delete result[key];
	            }
	        } else {
	            if (patchDict[key].syntax) {
	                result[key] = patchDict[key].syntax;
	            }
	        }
	    }

	    return result;
	}

	var data = {
	    properties: buildDictionary(mdnProperties, patch$2.properties),
	    types: buildDictionary(mdnSyntaxes, patch$2.syntaxes)
	};

	var cmpChar$1 = tokenizer.cmpChar;
	var isNumber$3 = tokenizer.isNumber;
	var TYPE$4 = tokenizer.TYPE;

	var IDENTIFIER$3 = TYPE$4.Identifier;
	var NUMBER$2 = TYPE$4.Number;
	var PLUSSIGN$4 = TYPE$4.PlusSign;
	var HYPHENMINUS$4 = TYPE$4.HyphenMinus;
	var N$5 = 110; // 'n'.charCodeAt(0)
	var DISALLOW_SIGN = true;
	var ALLOW_SIGN = false;

	function checkTokenIsInteger(scanner, disallowSign) {
	    var pos = scanner.tokenStart;

	    if (scanner.source.charCodeAt(pos) === PLUSSIGN$4 ||
	        scanner.source.charCodeAt(pos) === HYPHENMINUS$4) {
	        if (disallowSign) {
	            scanner.error();
	        }
	        pos++;
	    }

	    for (; pos < scanner.tokenEnd; pos++) {
	        if (!isNumber$3(scanner.source.charCodeAt(pos))) {
	            scanner.error('Unexpected input', pos);
	        }
	    }
	}

	// An+B microsyntax https://www.w3.org/TR/css-syntax-3/#anb
	var AnPlusB = {
	    name: 'AnPlusB',
	    structure: {
	        a: [String, null],
	        b: [String, null]
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var end = start;
	        var prefix = '';
	        var a = null;
	        var b = null;

	        if (this.scanner.tokenType === NUMBER$2 ||
	            this.scanner.tokenType === PLUSSIGN$4) {
	            checkTokenIsInteger(this.scanner, ALLOW_SIGN);
	            prefix = this.scanner.getTokenValue();
	            this.scanner.next();
	            end = this.scanner.tokenStart;
	        }

	        if (this.scanner.tokenType === IDENTIFIER$3) {
	            var bStart = this.scanner.tokenStart;

	            if (cmpChar$1(this.scanner.source, bStart, HYPHENMINUS$4)) {
	                if (prefix === '') {
	                    prefix = '-';
	                    bStart++;
	                } else {
	                    this.scanner.error('Unexpected hyphen minus');
	                }
	            }

	            if (!cmpChar$1(this.scanner.source, bStart, N$5)) {
	                this.scanner.error();
	            }

	            a = prefix === ''  ? '1'  :
	                prefix === '+' ? '+1' :
	                prefix === '-' ? '-1' :
	                prefix;

	            var len = this.scanner.tokenEnd - bStart;
	            if (len > 1) {
	                // ..n-..
	                if (this.scanner.source.charCodeAt(bStart + 1) !== HYPHENMINUS$4) {
	                    this.scanner.error('Unexpected input', bStart + 1);
	                }

	                if (len > 2) {
	                    // ..n-{number}..
	                    this.scanner.tokenStart = bStart + 2;
	                } else {
	                    // ..n- {number}
	                    this.scanner.next();
	                    this.scanner.skipSC();
	                }

	                checkTokenIsInteger(this.scanner, DISALLOW_SIGN);
	                b = '-' + this.scanner.getTokenValue();
	                this.scanner.next();
	                end = this.scanner.tokenStart;
	            } else {
	                prefix = '';
	                this.scanner.next();
	                end = this.scanner.tokenStart;
	                this.scanner.skipSC();

	                if (this.scanner.tokenType === HYPHENMINUS$4 ||
	                    this.scanner.tokenType === PLUSSIGN$4) {
	                    prefix = this.scanner.getTokenValue();
	                    this.scanner.next();
	                    this.scanner.skipSC();
	                }

	                if (this.scanner.tokenType === NUMBER$2) {
	                    checkTokenIsInteger(this.scanner, prefix !== '');

	                    if (!isNumber$3(this.scanner.source.charCodeAt(this.scanner.tokenStart))) {
	                        prefix = this.scanner.source.charAt(this.scanner.tokenStart);
	                        this.scanner.tokenStart++;
	                    }

	                    if (prefix === '') {
	                        // should be an operator before number
	                        this.scanner.error();
	                    } else if (prefix === '+') {
	                        // plus is using by default
	                        prefix = '';
	                    }

	                    b = prefix + this.scanner.getTokenValue();

	                    this.scanner.next();
	                    end = this.scanner.tokenStart;
	                } else {
	                    if (prefix) {
	                        this.scanner.eat(NUMBER$2);
	                    }
	                }
	            }
	        } else {
	            if (prefix === '' || prefix === '+') { // no number
	                this.scanner.error(
	                    'Number or identifier is expected',
	                    this.scanner.tokenStart + (
	                        this.scanner.tokenType === PLUSSIGN$4 ||
	                        this.scanner.tokenType === HYPHENMINUS$4
	                    )
	                );
	            }

	            b = prefix;
	        }

	        return {
	            type: 'AnPlusB',
	            loc: this.getLocation(start, end),
	            a: a,
	            b: b
	        };
	    },
	    generate: function(node) {
	        var a = node.a !== null && node.a !== undefined;
	        var b = node.b !== null && node.b !== undefined;

	        if (a) {
	            this.chunk(
	                node.a === '+1' ? '+n' :
	                node.a ===  '1' ?  'n' :
	                node.a === '-1' ? '-n' :
	                node.a + 'n'
	            );

	            if (b) {
	                b = String(node.b);
	                if (b.charAt(0) === '-' || b.charAt(0) === '+') {
	                    this.chunk(b.charAt(0));
	                    this.chunk(b.substr(1));
	                } else {
	                    this.chunk('+');
	                    this.chunk(b);
	                }
	            }
	        } else {
	            this.chunk(String(node.b));
	        }
	    }
	};

	var TYPE$5 = tokenizer.TYPE;

	var ATKEYWORD$2 = TYPE$5.AtKeyword;
	var SEMICOLON = TYPE$5.Semicolon;
	var LEFTCURLYBRACKET$2 = TYPE$5.LeftCurlyBracket;
	var RIGHTCURLYBRACKET$2 = TYPE$5.RightCurlyBracket;

	function consumeRaw(startToken) {
	    return this.Raw(startToken, SEMICOLON, LEFTCURLYBRACKET$2, false, true);
	}

	function isDeclarationBlockAtrule() {
	    for (var offset = 1, type; type = this.scanner.lookupType(offset); offset++) {
	        if (type === RIGHTCURLYBRACKET$2) {
	            return true;
	        }

	        if (type === LEFTCURLYBRACKET$2 ||
	            type === ATKEYWORD$2) {
	            return false;
	        }
	    }

	    return false;
	}

	var Atrule = {
	    name: 'Atrule',
	    structure: {
	        name: String,
	        prelude: ['AtrulePrelude', 'Raw', null],
	        block: ['Block', null]
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var name;
	        var nameLowerCase;
	        var prelude = null;
	        var block = null;

	        this.scanner.eat(ATKEYWORD$2);

	        name = this.scanner.substrToCursor(start + 1);
	        nameLowerCase = name.toLowerCase();
	        this.scanner.skipSC();

	        // parse prelude
	        if (this.scanner.eof === false &&
	            this.scanner.tokenType !== LEFTCURLYBRACKET$2 &&
	            this.scanner.tokenType !== SEMICOLON) {
	            if (this.parseAtrulePrelude) {
	                prelude = this.parseWithFallback(this.AtrulePrelude.bind(this, name), consumeRaw);

	                // turn empty AtrulePrelude into null
	                if (prelude.type === 'AtrulePrelude' && prelude.children.head === null) {
	                    prelude = null;
	                }
	            } else {
	                prelude = consumeRaw.call(this, this.scanner.currentToken);
	            }

	            this.scanner.skipSC();
	        }

	        switch (this.scanner.tokenType) {
	            case SEMICOLON:
	                this.scanner.next();
	                break;

	            case LEFTCURLYBRACKET$2:
	                if (this.atrule.hasOwnProperty(nameLowerCase) &&
	                    typeof this.atrule[nameLowerCase].block === 'function') {
	                    block = this.atrule[nameLowerCase].block.call(this);
	                } else {
	                    // TODO: should consume block content as Raw?
	                    block = this.Block(isDeclarationBlockAtrule.call(this));
	                }

	                break;
	        }

	        return {
	            type: 'Atrule',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            name: name,
	            prelude: prelude,
	            block: block
	        };
	    },
	    generate: function(node) {
	        this.chunk('@');
	        this.chunk(node.name);

	        if (node.prelude !== null) {
	            this.chunk(' ');
	            this.node(node.prelude);
	        }

	        if (node.block) {
	            this.node(node.block);
	        } else {
	            this.chunk(';');
	        }
	    },
	    walkContext: 'atrule'
	};

	var TYPE$6 = tokenizer.TYPE;

	var SEMICOLON$1 = TYPE$6.Semicolon;
	var LEFTCURLYBRACKET$3 = TYPE$6.LeftCurlyBracket;

	var AtrulePrelude = {
	    name: 'AtrulePrelude',
	    structure: {
	        children: [[]]
	    },
	    parse: function(name) {
	        var children = null;

	        if (name !== null) {
	            name = name.toLowerCase();
	        }

	        this.scanner.skipSC();

	        if (this.atrule.hasOwnProperty(name) &&
	            typeof this.atrule[name].prelude === 'function') {
	            // custom consumer
	            children = this.atrule[name].prelude.call(this);
	        } else {
	            // default consumer
	            children = this.readSequence(this.scope.AtrulePrelude);
	        }

	        this.scanner.skipSC();

	        if (this.scanner.eof !== true &&
	            this.scanner.tokenType !== LEFTCURLYBRACKET$3 &&
	            this.scanner.tokenType !== SEMICOLON$1) {
	            this.scanner.error('Semicolon or block is expected');
	        }

	        if (children === null) {
	            children = this.createList();
	        }

	        return {
	            type: 'AtrulePrelude',
	            loc: this.getLocationFromList(children),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.children(node);
	    },
	    walkContext: 'atrulePrelude'
	};

	var TYPE$7 = tokenizer.TYPE;

	var IDENTIFIER$4 = TYPE$7.Identifier;
	var STRING$2 = TYPE$7.String;
	var DOLLARSIGN = TYPE$7.DollarSign;
	var ASTERISK$1 = TYPE$7.Asterisk;
	var COLON = TYPE$7.Colon;
	var EQUALSSIGN = TYPE$7.EqualsSign;
	var LEFTSQUAREBRACKET$2 = TYPE$7.LeftSquareBracket;
	var RIGHTSQUAREBRACKET$2 = TYPE$7.RightSquareBracket;
	var CIRCUMFLEXACCENT = TYPE$7.CircumflexAccent;
	var VERTICALLINE$1 = TYPE$7.VerticalLine;
	var TILDE = TYPE$7.Tilde;

	function getAttributeName() {
	    if (this.scanner.eof) {
	        this.scanner.error('Unexpected end of input');
	    }

	    var start = this.scanner.tokenStart;
	    var expectIdentifier = false;
	    var checkColon = true;

	    if (this.scanner.tokenType === ASTERISK$1) {
	        expectIdentifier = true;
	        checkColon = false;
	        this.scanner.next();
	    } else if (this.scanner.tokenType !== VERTICALLINE$1) {
	        this.scanner.eat(IDENTIFIER$4);
	    }

	    if (this.scanner.tokenType === VERTICALLINE$1) {
	        if (this.scanner.lookupType(1) !== EQUALSSIGN) {
	            this.scanner.next();
	            this.scanner.eat(IDENTIFIER$4);
	        } else if (expectIdentifier) {
	            this.scanner.error('Identifier is expected', this.scanner.tokenEnd);
	        }
	    } else if (expectIdentifier) {
	        this.scanner.error('Vertical line is expected');
	    }

	    if (checkColon && this.scanner.tokenType === COLON) {
	        this.scanner.next();
	        this.scanner.eat(IDENTIFIER$4);
	    }

	    return {
	        type: 'Identifier',
	        loc: this.getLocation(start, this.scanner.tokenStart),
	        name: this.scanner.substrToCursor(start)
	    };
	}

	function getOperator() {
	    var start = this.scanner.tokenStart;
	    var tokenType = this.scanner.tokenType;

	    if (tokenType !== EQUALSSIGN &&        // =
	        tokenType !== TILDE &&             // ~=
	        tokenType !== CIRCUMFLEXACCENT &&  // ^=
	        tokenType !== DOLLARSIGN &&        // $=
	        tokenType !== ASTERISK$1 &&          // *=
	        tokenType !== VERTICALLINE$1         // |=
	    ) {
	        this.scanner.error('Attribute selector (=, ~=, ^=, $=, *=, |=) is expected');
	    }

	    if (tokenType === EQUALSSIGN) {
	        this.scanner.next();
	    } else {
	        this.scanner.next();
	        this.scanner.eat(EQUALSSIGN);
	    }

	    return this.scanner.substrToCursor(start);
	}

	// '[' S* attrib_name ']'
	// '[' S* attrib_name S* attrib_matcher S* [ IDENT | STRING ] S* attrib_flags? S* ']'
	var AttributeSelector = {
	    name: 'AttributeSelector',
	    structure: {
	        name: 'Identifier',
	        matcher: [String, null],
	        value: ['String', 'Identifier', null],
	        flags: [String, null]
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var name;
	        var matcher = null;
	        var value = null;
	        var flags = null;

	        this.scanner.eat(LEFTSQUAREBRACKET$2);
	        this.scanner.skipSC();

	        name = getAttributeName.call(this);
	        this.scanner.skipSC();

	        if (this.scanner.tokenType !== RIGHTSQUAREBRACKET$2) {
	            // avoid case `[name i]`
	            if (this.scanner.tokenType !== IDENTIFIER$4) {
	                matcher = getOperator.call(this);

	                this.scanner.skipSC();

	                value = this.scanner.tokenType === STRING$2
	                    ? this.String()
	                    : this.Identifier();

	                this.scanner.skipSC();
	            }

	            // attribute flags
	            if (this.scanner.tokenType === IDENTIFIER$4) {
	                flags = this.scanner.getTokenValue();
	                this.scanner.next();

	                this.scanner.skipSC();
	            }
	        }

	        this.scanner.eat(RIGHTSQUAREBRACKET$2);

	        return {
	            type: 'AttributeSelector',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            name: name,
	            matcher: matcher,
	            value: value,
	            flags: flags
	        };
	    },
	    generate: function(node) {
	        var flagsPrefix = ' ';

	        this.chunk('[');
	        this.node(node.name);

	        if (node.matcher !== null) {
	            this.chunk(node.matcher);

	            if (node.value !== null) {
	                this.node(node.value);

	                // space between string and flags is not required
	                if (node.value.type === 'String') {
	                    flagsPrefix = '';
	                }
	            }
	        }

	        if (node.flags !== null) {
	            this.chunk(flagsPrefix);
	            this.chunk(node.flags);
	        }

	        this.chunk(']');
	    }
	};

	var TYPE$8 = tokenizer.TYPE;

	var WHITESPACE$3 = TYPE$8.WhiteSpace;
	var COMMENT$3 = TYPE$8.Comment;
	var SEMICOLON$2 = TYPE$8.Semicolon;
	var ATKEYWORD$3 = TYPE$8.AtKeyword;
	var LEFTCURLYBRACKET$4 = TYPE$8.LeftCurlyBracket;
	var RIGHTCURLYBRACKET$3 = TYPE$8.RightCurlyBracket;

	function consumeRaw$1(startToken) {
	    return this.Raw(startToken, 0, 0, false, true);
	}
	function consumeRule() {
	    return this.parseWithFallback(this.Rule, consumeRaw$1);
	}
	function consumeRawDeclaration(startToken) {
	    return this.Raw(startToken, 0, SEMICOLON$2, true, true);
	}
	function consumeDeclaration() {
	    if (this.scanner.tokenType === SEMICOLON$2) {
	        return consumeRawDeclaration.call(this, this.scanner.currentToken);
	    }

	    var node = this.parseWithFallback(this.Declaration, consumeRawDeclaration);

	    if (this.scanner.tokenType === SEMICOLON$2) {
	        this.scanner.next();
	    }

	    return node;
	}

	var Block = {
	    name: 'Block',
	    structure: {
	        children: [[
	            'Atrule',
	            'Rule',
	            'Declaration'
	        ]]
	    },
	    parse: function(isDeclaration) {
	        var consumer = isDeclaration ? consumeDeclaration : consumeRule;

	        var start = this.scanner.tokenStart;
	        var children = this.createList();

	        this.scanner.eat(LEFTCURLYBRACKET$4);

	        scan:
	        while (!this.scanner.eof) {
	            switch (this.scanner.tokenType) {
	                case RIGHTCURLYBRACKET$3:
	                    break scan;

	                case WHITESPACE$3:
	                case COMMENT$3:
	                    this.scanner.next();
	                    break;

	                case ATKEYWORD$3:
	                    children.push(this.parseWithFallback(this.Atrule, consumeRaw$1));
	                    break;

	                default:
	                    children.push(consumer.call(this));
	            }
	        }

	        if (!this.scanner.eof) {
	            this.scanner.eat(RIGHTCURLYBRACKET$3);
	        }

	        return {
	            type: 'Block',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.chunk('{');
	        this.children(node, function(prev) {
	            if (prev.type === 'Declaration') {
	                this.chunk(';');
	            }
	        });
	        this.chunk('}');
	    },
	    walkContext: 'block'
	};

	var TYPE$9 = tokenizer.TYPE;
	var LEFTSQUAREBRACKET$3 = TYPE$9.LeftSquareBracket;
	var RIGHTSQUAREBRACKET$3 = TYPE$9.RightSquareBracket;

	var Brackets = {
	    name: 'Brackets',
	    structure: {
	        children: [[]]
	    },
	    parse: function(readSequence, recognizer) {
	        var start = this.scanner.tokenStart;
	        var children = null;

	        this.scanner.eat(LEFTSQUAREBRACKET$3);

	        children = readSequence.call(this, recognizer);

	        if (!this.scanner.eof) {
	            this.scanner.eat(RIGHTSQUAREBRACKET$3);
	        }

	        return {
	            type: 'Brackets',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.chunk('[');
	        this.children(node);
	        this.chunk(']');
	    }
	};

	var CDC$2 = tokenizer.TYPE.CDC;

	var CDC_1 = {
	    name: 'CDC',
	    structure: [],
	    parse: function() {
	        var start = this.scanner.tokenStart;

	        this.scanner.eat(CDC$2); // -->

	        return {
	            type: 'CDC',
	            loc: this.getLocation(start, this.scanner.tokenStart)
	        };
	    },
	    generate: function() {
	        this.chunk('-->');
	    }
	};

	var CDO$2 = tokenizer.TYPE.CDO;

	var CDO_1 = {
	    name: 'CDO',
	    structure: [],
	    parse: function() {
	        var start = this.scanner.tokenStart;

	        this.scanner.eat(CDO$2); // <!--

	        return {
	            type: 'CDO',
	            loc: this.getLocation(start, this.scanner.tokenStart)
	        };
	    },
	    generate: function() {
	        this.chunk('<!--');
	    }
	};

	var TYPE$a = tokenizer.TYPE;
	var IDENTIFIER$5 = TYPE$a.Identifier;
	var FULLSTOP$2 = TYPE$a.FullStop;

	// '.' ident
	var ClassSelector = {
	    name: 'ClassSelector',
	    structure: {
	        name: String
	    },
	    parse: function() {
	        this.scanner.eat(FULLSTOP$2);

	        return {
	            type: 'ClassSelector',
	            loc: this.getLocation(this.scanner.tokenStart - 1, this.scanner.tokenEnd),
	            name: this.scanner.consume(IDENTIFIER$5)
	        };
	    },
	    generate: function(node) {
	        this.chunk('.');
	        this.chunk(node.name);
	    }
	};

	var TYPE$b = tokenizer.TYPE;

	var PLUSSIGN$5 = TYPE$b.PlusSign;
	var SOLIDUS = TYPE$b.Solidus;
	var GREATERTHANSIGN$2 = TYPE$b.GreaterThanSign;
	var TILDE$1 = TYPE$b.Tilde;

	// + | > | ~ | /deep/
	var Combinator = {
	    name: 'Combinator',
	    structure: {
	        name: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;

	        switch (this.scanner.tokenType) {
	            case GREATERTHANSIGN$2:
	            case PLUSSIGN$5:
	            case TILDE$1:
	                this.scanner.next();
	                break;

	            case SOLIDUS:
	                this.scanner.next();
	                this.scanner.expectIdentifier('deep');
	                this.scanner.eat(SOLIDUS);
	                break;

	            default:
	                this.scanner.error('Combinator is expected');
	        }

	        return {
	            type: 'Combinator',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            name: this.scanner.substrToCursor(start)
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.name);
	    }
	};

	var TYPE$c = tokenizer.TYPE;

	var ASTERISK$2 = TYPE$c.Asterisk;
	var SOLIDUS$1 = TYPE$c.Solidus;

	// '/*' .* '*/'
	var Comment = {
	    name: 'Comment',
	    structure: {
	        value: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var end = this.scanner.tokenEnd;

	        if ((end - start + 2) >= 2 &&
	            this.scanner.source.charCodeAt(end - 2) === ASTERISK$2 &&
	            this.scanner.source.charCodeAt(end - 1) === SOLIDUS$1) {
	            end -= 2;
	        }

	        this.scanner.next();

	        return {
	            type: 'Comment',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            value: this.scanner.source.substring(start + 2, end)
	        };
	    },
	    generate: function(node) {
	        this.chunk('/*');
	        this.chunk(node.value);
	        this.chunk('*/');
	    }
	};

	var isCustomProperty$1 = names.isCustomProperty;
	var TYPE$d = tokenizer.TYPE;

	var IDENTIFIER$6 = TYPE$d.Identifier;
	var COLON$1 = TYPE$d.Colon;
	var EXCLAMATIONMARK$2 = TYPE$d.ExclamationMark;
	var SOLIDUS$2 = TYPE$d.Solidus;
	var ASTERISK$3 = TYPE$d.Asterisk;
	var DOLLARSIGN$1 = TYPE$d.DollarSign;
	var HYPHENMINUS$5 = TYPE$d.HyphenMinus;
	var SEMICOLON$3 = TYPE$d.Semicolon;
	var PLUSSIGN$6 = TYPE$d.PlusSign;
	var NUMBERSIGN$2 = TYPE$d.NumberSign;

	function consumeValueRaw(startToken) {
	    return this.Raw(startToken, EXCLAMATIONMARK$2, SEMICOLON$3, false, true);
	}

	function consumeCustomPropertyRaw(startToken) {
	    return this.Raw(startToken, EXCLAMATIONMARK$2, SEMICOLON$3, false, false);
	}

	function consumeValue() {
	    var startValueToken = this.scanner.currentToken;
	    var value = this.Value();

	    if (value.type !== 'Raw' &&
	        this.scanner.eof === false &&
	        this.scanner.tokenType !== SEMICOLON$3 &&
	        this.scanner.tokenType !== EXCLAMATIONMARK$2 &&
	        this.scanner.isBalanceEdge(startValueToken) === false) {
	        this.scanner.error();
	    }

	    return value;
	}

	var Declaration = {
	    name: 'Declaration',
	    structure: {
	        important: [Boolean, String],
	        property: String,
	        value: ['Value', 'Raw']
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var startToken = this.scanner.currentToken;
	        var property = readProperty$1.call(this);
	        var customProperty = isCustomProperty$1(property);
	        var parseValue = customProperty ? this.parseCustomProperty : this.parseValue;
	        var consumeRaw = customProperty ? consumeCustomPropertyRaw : consumeValueRaw;
	        var important = false;
	        var value;

	        this.scanner.skipSC();
	        this.scanner.eat(COLON$1);

	        if (!customProperty) {
	            this.scanner.skipSC();
	        }

	        if (parseValue) {
	            value = this.parseWithFallback(consumeValue, consumeRaw);
	        } else {
	            value = consumeRaw.call(this, this.scanner.currentToken);
	        }

	        if (this.scanner.tokenType === EXCLAMATIONMARK$2) {
	            important = getImportant(this.scanner);
	            this.scanner.skipSC();
	        }

	        // Do not include semicolon to range per spec
	        // https://drafts.csswg.org/css-syntax/#declaration-diagram

	        if (this.scanner.eof === false &&
	            this.scanner.tokenType !== SEMICOLON$3 &&
	            this.scanner.isBalanceEdge(startToken) === false) {
	            this.scanner.error();
	        }

	        return {
	            type: 'Declaration',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            important: important,
	            property: property,
	            value: value
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.property);
	        this.chunk(':');
	        this.node(node.value);

	        if (node.important) {
	            this.chunk(node.important === true ? '!important' : '!' + node.important);
	        }
	    },
	    walkContext: 'declaration'
	};

	function readProperty$1() {
	    var start = this.scanner.tokenStart;
	    var prefix = 0;

	    // hacks
	    switch (this.scanner.tokenType) {
	        case ASTERISK$3:
	        case DOLLARSIGN$1:
	        case PLUSSIGN$6:
	        case NUMBERSIGN$2:
	            prefix = 1;
	            break;

	        // TODO: not sure we should support this hack
	        case SOLIDUS$2:
	            prefix = this.scanner.lookupType(1) === SOLIDUS$2 ? 2 : 1;
	            break;
	    }

	    if (this.scanner.lookupType(prefix) === HYPHENMINUS$5) {
	        prefix++;
	    }

	    if (prefix) {
	        this.scanner.skip(prefix);
	    }

	    this.scanner.eat(IDENTIFIER$6);

	    return this.scanner.substrToCursor(start);
	}

	// ! ws* important
	function getImportant(scanner) {
	    scanner.eat(EXCLAMATIONMARK$2);
	    scanner.skipSC();

	    var important = scanner.consume(IDENTIFIER$6);

	    // store original value in case it differ from `important`
	    // for better original source restoring and hacks like `!ie` support
	    return important === 'important' ? true : important;
	}

	var TYPE$e = tokenizer.TYPE;

	var WHITESPACE$4 = TYPE$e.WhiteSpace;
	var COMMENT$4 = TYPE$e.Comment;
	var SEMICOLON$4 = TYPE$e.Semicolon;

	function consumeRaw$2(startToken) {
	    return this.Raw(startToken, 0, SEMICOLON$4, true, true);
	}

	var DeclarationList = {
	    name: 'DeclarationList',
	    structure: {
	        children: [[
	            'Declaration'
	        ]]
	    },
	    parse: function() {
	        var children = this.createList();

	        scan:
	        while (!this.scanner.eof) {
	            switch (this.scanner.tokenType) {
	                case WHITESPACE$4:
	                case COMMENT$4:
	                case SEMICOLON$4:
	                    this.scanner.next();
	                    break;

	                default:
	                    children.push(this.parseWithFallback(this.Declaration, consumeRaw$2));
	            }
	        }

	        return {
	            type: 'DeclarationList',
	            loc: this.getLocationFromList(children),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.children(node, function(prev) {
	            if (prev.type === 'Declaration') {
	                this.chunk(';');
	            }
	        });
	    }
	};

	var NUMBER$3 = tokenizer.TYPE.Number;

	// special reader for units to avoid adjoined IE hacks (i.e. '1px\9')
	function readUnit(scanner) {
	    var unit = scanner.getTokenValue();
	    var backSlashPos = unit.indexOf('\\');

	    if (backSlashPos > 0) {
	        // patch token offset
	        scanner.tokenStart += backSlashPos;

	        // return part before backslash
	        return unit.substring(0, backSlashPos);
	    }

	    // no backslash in unit name
	    scanner.next();

	    return unit;
	}

	// number ident
	var Dimension = {
	    name: 'Dimension',
	    structure: {
	        value: String,
	        unit: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var value = this.scanner.consume(NUMBER$3);
	        var unit = readUnit(this.scanner);

	        return {
	            type: 'Dimension',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            value: value,
	            unit: unit
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.value);
	        this.chunk(node.unit);
	    }
	};

	var TYPE$f = tokenizer.TYPE;
	var RIGHTPARENTHESIS$3 = TYPE$f.RightParenthesis;

	// <function-token> <sequence> ')'
	var _Function = {
	    name: 'Function',
	    structure: {
	        name: String,
	        children: [[]]
	    },
	    parse: function(readSequence, recognizer) {
	        var start = this.scanner.tokenStart;
	        var name = this.scanner.consumeFunctionName();
	        var nameLowerCase = name.toLowerCase();
	        var children;

	        children = recognizer.hasOwnProperty(nameLowerCase)
	            ? recognizer[nameLowerCase].call(this, recognizer)
	            : readSequence.call(this, recognizer);

	        if (!this.scanner.eof) {
	            this.scanner.eat(RIGHTPARENTHESIS$3);
	        }

	        return {
	            type: 'Function',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            name: name,
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.name);
	        this.chunk('(');
	        this.children(node);
	        this.chunk(')');
	    },
	    walkContext: 'function'
	};

	var isHex$2 = tokenizer.isHex;
	var TYPE$g = tokenizer.TYPE;

	var IDENTIFIER$7 = TYPE$g.Identifier;
	var NUMBER$4 = TYPE$g.Number;
	var NUMBERSIGN$3 = TYPE$g.NumberSign;

	function consumeHexSequence(scanner, required) {
	    if (!isHex$2(scanner.source.charCodeAt(scanner.tokenStart))) {
	        if (required) {
	            scanner.error('Unexpected input', scanner.tokenStart);
	        } else {
	            return;
	        }
	    }

	    for (var pos = scanner.tokenStart + 1; pos < scanner.tokenEnd; pos++) {
	        var code = scanner.source.charCodeAt(pos);

	        // break on non-hex char
	        if (!isHex$2(code)) {
	            // break token, exclude symbol
	            scanner.tokenStart = pos;
	            return;
	        }
	    }

	    // token is full hex sequence, go to next token
	    scanner.next();
	}

	// # ident
	var HexColor = {
	    name: 'HexColor',
	    structure: {
	        value: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;

	        this.scanner.eat(NUMBERSIGN$3);

	        scan:
	        switch (this.scanner.tokenType) {
	            case NUMBER$4:
	                consumeHexSequence(this.scanner, true);

	                // if token is identifier then number consists of hex only,
	                // try to add identifier to result
	                if (this.scanner.tokenType === IDENTIFIER$7) {
	                    consumeHexSequence(this.scanner, false);
	                }

	                break;

	            case IDENTIFIER$7:
	                consumeHexSequence(this.scanner, true);
	                break;

	            default:
	                this.scanner.error('Number or identifier is expected');
	        }

	        return {
	            type: 'HexColor',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            value: this.scanner.substrToCursor(start + 1) // skip #
	        };
	    },
	    generate: function(node) {
	        this.chunk('#');
	        this.chunk(node.value);
	    }
	};

	var TYPE$h = tokenizer.TYPE;
	var IDENTIFIER$8 = TYPE$h.Identifier;

	var Identifier = {
	    name: 'Identifier',
	    structure: {
	        name: String
	    },
	    parse: function() {
	        return {
	            type: 'Identifier',
	            loc: this.getLocation(this.scanner.tokenStart, this.scanner.tokenEnd),
	            name: this.scanner.consume(IDENTIFIER$8)
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.name);
	    }
	};

	var TYPE$i = tokenizer.TYPE;
	var IDENTIFIER$9 = TYPE$i.Identifier;
	var NUMBERSIGN$4 = TYPE$i.NumberSign;

	// '#' ident
	var IdSelector = {
	    name: 'IdSelector',
	    structure: {
	        name: String
	    },
	    parse: function() {
	        this.scanner.eat(NUMBERSIGN$4);

	        return {
	            type: 'IdSelector',
	            loc: this.getLocation(this.scanner.tokenStart - 1, this.scanner.tokenEnd),
	            name: this.scanner.consume(IDENTIFIER$9)
	        };
	    },
	    generate: function(node) {
	        this.chunk('#');
	        this.chunk(node.name);
	    }
	};

	var TYPE$j = tokenizer.TYPE;

	var IDENTIFIER$a = TYPE$j.Identifier;
	var NUMBER$5 = TYPE$j.Number;
	var LEFTPARENTHESIS$3 = TYPE$j.LeftParenthesis;
	var RIGHTPARENTHESIS$4 = TYPE$j.RightParenthesis;
	var COLON$2 = TYPE$j.Colon;
	var SOLIDUS$3 = TYPE$j.Solidus;

	var MediaFeature = {
	    name: 'MediaFeature',
	    structure: {
	        name: String,
	        value: ['Identifier', 'Number', 'Dimension', 'Ratio', null]
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var name;
	        var value = null;

	        this.scanner.eat(LEFTPARENTHESIS$3);
	        this.scanner.skipSC();

	        name = this.scanner.consume(IDENTIFIER$a);
	        this.scanner.skipSC();

	        if (this.scanner.tokenType !== RIGHTPARENTHESIS$4) {
	            this.scanner.eat(COLON$2);
	            this.scanner.skipSC();

	            switch (this.scanner.tokenType) {
	                case NUMBER$5:
	                    if (this.scanner.lookupType(1) === IDENTIFIER$a) {
	                        value = this.Dimension();
	                    } else if (this.scanner.lookupNonWSType(1) === SOLIDUS$3) {
	                        value = this.Ratio();
	                    } else {
	                        value = this.Number();
	                    }

	                    break;

	                case IDENTIFIER$a:
	                    value = this.Identifier();

	                    break;

	                default:
	                    this.scanner.error('Number, dimension, ratio or identifier is expected');
	            }

	            this.scanner.skipSC();
	        }

	        this.scanner.eat(RIGHTPARENTHESIS$4);

	        return {
	            type: 'MediaFeature',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            name: name,
	            value: value
	        };
	    },
	    generate: function(node) {
	        this.chunk('(');
	        this.chunk(node.name);
	        if (node.value !== null) {
	            this.chunk(':');
	            this.node(node.value);
	        }
	        this.chunk(')');
	    }
	};

	var TYPE$k = tokenizer.TYPE;

	var WHITESPACE$5 = TYPE$k.WhiteSpace;
	var COMMENT$5 = TYPE$k.Comment;
	var IDENTIFIER$b = TYPE$k.Identifier;
	var LEFTPARENTHESIS$4 = TYPE$k.LeftParenthesis;

	var MediaQuery = {
	    name: 'MediaQuery',
	    structure: {
	        children: [[
	            'Identifier',
	            'MediaFeature',
	            'WhiteSpace'
	        ]]
	    },
	    parse: function() {
	        this.scanner.skipSC();

	        var children = this.createList();
	        var child = null;
	        var space = null;

	        scan:
	        while (!this.scanner.eof) {
	            switch (this.scanner.tokenType) {
	                case COMMENT$5:
	                    this.scanner.next();
	                    continue;

	                case WHITESPACE$5:
	                    space = this.WhiteSpace();
	                    continue;

	                case IDENTIFIER$b:
	                    child = this.Identifier();
	                    break;

	                case LEFTPARENTHESIS$4:
	                    child = this.MediaFeature();
	                    break;

	                default:
	                    break scan;
	            }

	            if (space !== null) {
	                children.push(space);
	                space = null;
	            }

	            children.push(child);
	        }

	        if (child === null) {
	            this.scanner.error('Identifier or parenthesis is expected');
	        }

	        return {
	            type: 'MediaQuery',
	            loc: this.getLocationFromList(children),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.children(node);
	    }
	};

	var COMMA$1 = tokenizer.TYPE.Comma;

	var MediaQueryList = {
	    name: 'MediaQueryList',
	    structure: {
	        children: [[
	            'MediaQuery'
	        ]]
	    },
	    parse: function(relative) {
	        var children = this.createList();

	        this.scanner.skipSC();

	        while (!this.scanner.eof) {
	            children.push(this.MediaQuery(relative));

	            if (this.scanner.tokenType !== COMMA$1) {
	                break;
	            }

	            this.scanner.next();
	        }

	        return {
	            type: 'MediaQueryList',
	            loc: this.getLocationFromList(children),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.children(node, function() {
	            this.chunk(',');
	        });
	    }
	};

	// https://drafts.csswg.org/css-syntax-3/#the-anb-type
	var Nth = {
	    name: 'Nth',
	    structure: {
	        nth: ['AnPlusB', 'Identifier'],
	        selector: ['SelectorList', null]
	    },
	    parse: function(allowOfClause) {
	        this.scanner.skipSC();

	        var start = this.scanner.tokenStart;
	        var end = start;
	        var selector = null;
	        var query;

	        if (this.scanner.lookupValue(0, 'odd') || this.scanner.lookupValue(0, 'even')) {
	            query = this.Identifier();
	        } else {
	            query = this.AnPlusB();
	        }

	        this.scanner.skipSC();

	        if (allowOfClause && this.scanner.lookupValue(0, 'of')) {
	            this.scanner.next();

	            selector = this.SelectorList();

	            if (this.needPositions) {
	                end = this.getLastListNode(selector.children).loc.end.offset;
	            }
	        } else {
	            if (this.needPositions) {
	                end = query.loc.end.offset;
	            }
	        }

	        return {
	            type: 'Nth',
	            loc: this.getLocation(start, end),
	            nth: query,
	            selector: selector
	        };
	    },
	    generate: function(node) {
	        this.node(node.nth);
	        if (node.selector !== null) {
	            this.chunk(' of ');
	            this.node(node.selector);
	        }
	    }
	};

	var NUMBER$6 = tokenizer.TYPE.Number;

	var _Number = {
	    name: 'Number',
	    structure: {
	        value: String
	    },
	    parse: function() {
	        return {
	            type: 'Number',
	            loc: this.getLocation(this.scanner.tokenStart, this.scanner.tokenEnd),
	            value: this.scanner.consume(NUMBER$6)
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.value);
	    }
	};

	// '/' | '*' | ',' | ':' | '+' | '-'
	var Operator = {
	    name: 'Operator',
	    structure: {
	        value: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;

	        this.scanner.next();

	        return {
	            type: 'Operator',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            value: this.scanner.substrToCursor(start)
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.value);
	    }
	};

	var TYPE$l = tokenizer.TYPE;
	var LEFTPARENTHESIS$5 = TYPE$l.LeftParenthesis;
	var RIGHTPARENTHESIS$5 = TYPE$l.RightParenthesis;

	var Parentheses = {
	    name: 'Parentheses',
	    structure: {
	        children: [[]]
	    },
	    parse: function(readSequence, recognizer) {
	        var start = this.scanner.tokenStart;
	        var children = null;

	        this.scanner.eat(LEFTPARENTHESIS$5);

	        children = readSequence.call(this, recognizer);

	        if (!this.scanner.eof) {
	            this.scanner.eat(RIGHTPARENTHESIS$5);
	        }

	        return {
	            type: 'Parentheses',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.chunk('(');
	        this.children(node);
	        this.chunk(')');
	    }
	};

	var TYPE$m = tokenizer.TYPE;

	var NUMBER$7 = TYPE$m.Number;
	var PERCENTSIGN = TYPE$m.PercentSign;

	var Percentage = {
	    name: 'Percentage',
	    structure: {
	        value: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var number = this.scanner.consume(NUMBER$7);

	        this.scanner.eat(PERCENTSIGN);

	        return {
	            type: 'Percentage',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            value: number
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.value);
	        this.chunk('%');
	    }
	};

	var TYPE$n = tokenizer.TYPE;

	var IDENTIFIER$c = TYPE$n.Identifier;
	var FUNCTION$2 = TYPE$n.Function;
	var COLON$3 = TYPE$n.Colon;
	var RIGHTPARENTHESIS$6 = TYPE$n.RightParenthesis;

	// : ident [ '(' .. ')' ]?
	var PseudoClassSelector = {
	    name: 'PseudoClassSelector',
	    structure: {
	        name: String,
	        children: [['Raw'], null]
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var children = null;
	        var name;
	        var nameLowerCase;

	        this.scanner.eat(COLON$3);

	        if (this.scanner.tokenType === FUNCTION$2) {
	            name = this.scanner.consumeFunctionName();
	            nameLowerCase = name.toLowerCase();

	            if (this.pseudo.hasOwnProperty(nameLowerCase)) {
	                this.scanner.skipSC();
	                children = this.pseudo[nameLowerCase].call(this);
	                this.scanner.skipSC();
	            } else {
	                children = this.createList();
	                children.push(
	                    this.Raw(this.scanner.currentToken, 0, 0, false, false)
	                );
	            }

	            this.scanner.eat(RIGHTPARENTHESIS$6);
	        } else {
	            name = this.scanner.consume(IDENTIFIER$c);
	        }

	        return {
	            type: 'PseudoClassSelector',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            name: name,
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.chunk(':');
	        this.chunk(node.name);

	        if (node.children !== null) {
	            this.chunk('(');
	            this.children(node);
	            this.chunk(')');
	        }
	    },
	    walkContext: 'function'
	};

	var TYPE$o = tokenizer.TYPE;

	var IDENTIFIER$d = TYPE$o.Identifier;
	var FUNCTION$3 = TYPE$o.Function;
	var COLON$4 = TYPE$o.Colon;
	var RIGHTPARENTHESIS$7 = TYPE$o.RightParenthesis;

	// :: ident [ '(' .. ')' ]?
	var PseudoElementSelector = {
	    name: 'PseudoElementSelector',
	    structure: {
	        name: String,
	        children: [['Raw'], null]
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var children = null;
	        var name;
	        var nameLowerCase;

	        this.scanner.eat(COLON$4);
	        this.scanner.eat(COLON$4);

	        if (this.scanner.tokenType === FUNCTION$3) {
	            name = this.scanner.consumeFunctionName();
	            nameLowerCase = name.toLowerCase();

	            if (this.pseudo.hasOwnProperty(nameLowerCase)) {
	                this.scanner.skipSC();
	                children = this.pseudo[nameLowerCase].call(this);
	                this.scanner.skipSC();
	            } else {
	                children = this.createList();
	                children.push(
	                    this.Raw(this.scanner.currentToken, 0, 0, false, false)
	                );
	            }

	            this.scanner.eat(RIGHTPARENTHESIS$7);
	        } else {
	            name = this.scanner.consume(IDENTIFIER$d);
	        }

	        return {
	            type: 'PseudoElementSelector',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            name: name,
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.chunk('::');
	        this.chunk(node.name);

	        if (node.children !== null) {
	            this.chunk('(');
	            this.children(node);
	            this.chunk(')');
	        }
	    },
	    walkContext: 'function'
	};

	var isNumber$4 = tokenizer.isNumber;
	var TYPE$p = tokenizer.TYPE;
	var NUMBER$8 = TYPE$p.Number;
	var SOLIDUS$4 = TYPE$p.Solidus;
	var FULLSTOP$3 = TYPE$p.FullStop;

	// Terms of <ratio> should to be a positive number (not zero or negative)
	// (see https://drafts.csswg.org/mediaqueries-3/#values)
	// However, -o-min-device-pixel-ratio takes fractional values as a ratio's term
	// and this is using by various sites. Therefore we relax checking on parse
	// to test a term is unsigned number without exponent part.
	// Additional checks may to be applied on lexer validation.
	function consumeNumber$1(scanner) {
	    var value = scanner.consumeNonWS(NUMBER$8);

	    for (var i = 0; i < value.length; i++) {
	        var code = value.charCodeAt(i);
	        if (!isNumber$4(code) && code !== FULLSTOP$3) {
	            scanner.error('Unsigned number is expected', scanner.tokenStart - value.length + i);
	        }
	    }

	    if (Number(value) === 0) {
	        scanner.error('Zero number is not allowed', scanner.tokenStart - value.length);
	    }

	    return value;
	}

	// <positive-integer> S* '/' S* <positive-integer>
	var Ratio = {
	    name: 'Ratio',
	    structure: {
	        left: String,
	        right: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var left = consumeNumber$1(this.scanner);
	        var right;

	        this.scanner.eatNonWS(SOLIDUS$4);
	        right = consumeNumber$1(this.scanner);

	        return {
	            type: 'Ratio',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            left: left,
	            right: right
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.left);
	        this.chunk('/');
	        this.chunk(node.right);
	    }
	};

	var Raw = {
	    name: 'Raw',
	    structure: {
	        value: String
	    },
	    parse: function(startToken, endTokenType1, endTokenType2, includeTokenType2, excludeWhiteSpace) {
	        var startOffset = this.scanner.getTokenStart(startToken);
	        var endOffset;

	        this.scanner.skip(
	            this.scanner.getRawLength(
	                startToken,
	                endTokenType1,
	                endTokenType2,
	                includeTokenType2
	            )
	        );

	        if (excludeWhiteSpace && this.scanner.tokenStart > startOffset) {
	            endOffset = this.scanner.getOffsetExcludeWS();
	        } else {
	            endOffset = this.scanner.tokenStart;
	        }

	        return {
	            type: 'Raw',
	            loc: this.getLocation(startOffset, endOffset),
	            value: this.scanner.source.substring(startOffset, endOffset)
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.value);
	    }
	};

	var TYPE$q = tokenizer.TYPE;

	var LEFTCURLYBRACKET$5 = TYPE$q.LeftCurlyBracket;

	function consumeRaw$3(startToken) {
	    return this.Raw(startToken, LEFTCURLYBRACKET$5, 0, false, true);
	}

	function consumePrelude() {
	    var prelude = this.SelectorList();

	    if (prelude.type !== 'Raw' &&
	        this.scanner.eof === false &&
	        this.scanner.tokenType !== LEFTCURLYBRACKET$5) {
	        this.scanner.error();
	    }

	    return prelude;
	}

	var Rule = {
	    name: 'Rule',
	    structure: {
	        prelude: ['SelectorList', 'Raw'],
	        block: ['Block']
	    },
	    parse: function() {
	        var startToken = this.scanner.currentToken;
	        var startOffset = this.scanner.tokenStart;
	        var prelude;
	        var block;

	        if (this.parseRulePrelude) {
	            prelude = this.parseWithFallback(consumePrelude, consumeRaw$3);
	        } else {
	            prelude = consumeRaw$3.call(this, startToken);
	        }

	        block = this.Block(true);

	        return {
	            type: 'Rule',
	            loc: this.getLocation(startOffset, this.scanner.tokenStart),
	            prelude: prelude,
	            block: block
	        };
	    },
	    generate: function(node) {
	        this.node(node.prelude);
	        this.node(node.block);
	    },
	    walkContext: 'rule'
	};

	var Selector = {
	    name: 'Selector',
	    structure: {
	        children: [[
	            'TypeSelector',
	            'IdSelector',
	            'ClassSelector',
	            'AttributeSelector',
	            'PseudoClassSelector',
	            'PseudoElementSelector',
	            'Combinator',
	            'WhiteSpace'
	        ]]
	    },
	    parse: function() {
	        var children = this.readSequence(this.scope.Selector);

	        // nothing were consumed
	        if (this.getFirstListNode(children) === null) {
	            this.scanner.error('Selector is expected');
	        }

	        return {
	            type: 'Selector',
	            loc: this.getLocationFromList(children),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.children(node);
	    }
	};

	var TYPE$r = tokenizer.TYPE;

	var COMMA$2 = TYPE$r.Comma;

	var SelectorList = {
	    name: 'SelectorList',
	    structure: {
	        children: [[
	            'Selector',
	            'Raw'
	        ]]
	    },
	    parse: function() {
	        var children = this.createList();

	        while (!this.scanner.eof) {
	            children.push(this.Selector());

	            if (this.scanner.tokenType === COMMA$2) {
	                this.scanner.next();
	                continue;
	            }

	            break;
	        }

	        return {
	            type: 'SelectorList',
	            loc: this.getLocationFromList(children),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.children(node, function() {
	            this.chunk(',');
	        });
	    },
	    walkContext: 'selector'
	};

	var STRING$3 = tokenizer.TYPE.String;

	var _String = {
	    name: 'String',
	    structure: {
	        value: String
	    },
	    parse: function() {
	        return {
	            type: 'String',
	            loc: this.getLocation(this.scanner.tokenStart, this.scanner.tokenEnd),
	            value: this.scanner.consume(STRING$3)
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.value);
	    }
	};

	var TYPE$s = tokenizer.TYPE;

	var WHITESPACE$6 = TYPE$s.WhiteSpace;
	var COMMENT$6 = TYPE$s.Comment;
	var EXCLAMATIONMARK$3 = TYPE$s.ExclamationMark;
	var ATKEYWORD$4 = TYPE$s.AtKeyword;
	var CDO$3 = TYPE$s.CDO;
	var CDC$3 = TYPE$s.CDC;

	function consumeRaw$4(startToken) {
	    return this.Raw(startToken, 0, 0, false, false);
	}

	var StyleSheet = {
	    name: 'StyleSheet',
	    structure: {
	        children: [[
	            'Comment',
	            'CDO',
	            'CDC',
	            'Atrule',
	            'Rule',
	            'Raw'
	        ]]
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var children = this.createList();
	        var child;

	        scan:
	        while (!this.scanner.eof) {
	            switch (this.scanner.tokenType) {
	                case WHITESPACE$6:
	                    this.scanner.next();
	                    continue;

	                case COMMENT$6:
	                    // ignore comments except exclamation comments (i.e. /*! .. */) on top level
	                    if (this.scanner.source.charCodeAt(this.scanner.tokenStart + 2) !== EXCLAMATIONMARK$3) {
	                        this.scanner.next();
	                        continue;
	                    }

	                    child = this.Comment();
	                    break;

	                case CDO$3: // <!--
	                    child = this.CDO();
	                    break;

	                case CDC$3: // -->
	                    child = this.CDC();
	                    break;

	                // CSS Syntax Module Level 3
	                // §2.2 Error handling
	                // At the "top level" of a stylesheet, an <at-keyword-token> starts an at-rule.
	                case ATKEYWORD$4:
	                    child = this.parseWithFallback(this.Atrule, consumeRaw$4);
	                    break;

	                // Anything else starts a qualified rule ...
	                default:
	                    child = this.parseWithFallback(this.Rule, consumeRaw$4);
	            }

	            children.push(child);
	        }

	        return {
	            type: 'StyleSheet',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.children(node);
	    },
	    walkContext: 'stylesheet'
	};

	var TYPE$t = tokenizer.TYPE;

	var IDENTIFIER$e = TYPE$t.Identifier;
	var ASTERISK$4 = TYPE$t.Asterisk;
	var VERTICALLINE$2 = TYPE$t.VerticalLine;

	function eatIdentifierOrAsterisk() {
	    if (this.scanner.tokenType !== IDENTIFIER$e &&
	        this.scanner.tokenType !== ASTERISK$4) {
	        this.scanner.error('Identifier or asterisk is expected');
	    }

	    this.scanner.next();
	}

	// ident
	// ident|ident
	// ident|*
	// *
	// *|ident
	// *|*
	// |ident
	// |*
	var TypeSelector = {
	    name: 'TypeSelector',
	    structure: {
	        name: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;

	        if (this.scanner.tokenType === VERTICALLINE$2) {
	            this.scanner.next();
	            eatIdentifierOrAsterisk.call(this);
	        } else {
	            eatIdentifierOrAsterisk.call(this);

	            if (this.scanner.tokenType === VERTICALLINE$2) {
	                this.scanner.next();
	                eatIdentifierOrAsterisk.call(this);
	            }
	        }

	        return {
	            type: 'TypeSelector',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            name: this.scanner.substrToCursor(start)
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.name);
	    }
	};

	var isHex$3 = tokenizer.isHex;
	var TYPE$u = tokenizer.TYPE;

	var IDENTIFIER$f = TYPE$u.Identifier;
	var NUMBER$9 = TYPE$u.Number;
	var PLUSSIGN$7 = TYPE$u.PlusSign;
	var HYPHENMINUS$6 = TYPE$u.HyphenMinus;
	var FULLSTOP$4 = TYPE$u.FullStop;
	var QUESTIONMARK$1 = TYPE$u.QuestionMark;

	function scanUnicodeNumber(scanner) {
	    for (var pos = scanner.tokenStart + 1; pos < scanner.tokenEnd; pos++) {
	        var code = scanner.source.charCodeAt(pos);

	        // break on fullstop or hyperminus/plussign after exponent
	        if (code === FULLSTOP$4 || code === PLUSSIGN$7) {
	            // break token, exclude symbol
	            scanner.tokenStart = pos;
	            return false;
	        }
	    }

	    return true;
	}

	// https://drafts.csswg.org/css-syntax-3/#urange
	function scanUnicodeRange(scanner) {
	    var hexStart = scanner.tokenStart + 1; // skip +
	    var hexLength = 0;

	    scan: {
	        if (scanner.tokenType === NUMBER$9) {
	            if (scanner.source.charCodeAt(scanner.tokenStart) !== FULLSTOP$4 && scanUnicodeNumber(scanner)) {
	                scanner.next();
	            } else if (scanner.source.charCodeAt(scanner.tokenStart) !== HYPHENMINUS$6) {
	                break scan;
	            }
	        } else {
	            scanner.next(); // PLUSSIGN
	        }

	        if (scanner.tokenType === HYPHENMINUS$6) {
	            scanner.next();
	        }

	        if (scanner.tokenType === NUMBER$9) {
	            scanner.next();
	        }

	        if (scanner.tokenType === IDENTIFIER$f) {
	            scanner.next();
	        }

	        if (scanner.tokenStart === hexStart) {
	            scanner.error('Unexpected input', hexStart);
	        }
	    }

	    // validate for U+x{1,6} or U+x{1,6}-x{1,6}
	    // where x is [0-9a-fA-F]
	    for (var i = hexStart, wasHyphenMinus = false; i < scanner.tokenStart; i++) {
	        var code = scanner.source.charCodeAt(i);

	        if (isHex$3(code) === false && (code !== HYPHENMINUS$6 || wasHyphenMinus)) {
	            scanner.error('Unexpected input', i);
	        }

	        if (code === HYPHENMINUS$6) {
	            // hex sequence shouldn't be an empty
	            if (hexLength === 0) {
	                scanner.error('Unexpected input', i);
	            }

	            wasHyphenMinus = true;
	            hexLength = 0;
	        } else {
	            hexLength++;

	            // too long hex sequence
	            if (hexLength > 6) {
	                scanner.error('Too long hex sequence', i);
	            }
	        }

	    }

	    // check we have a non-zero sequence
	    if (hexLength === 0) {
	        scanner.error('Unexpected input', i - 1);
	    }

	    // U+abc???
	    if (!wasHyphenMinus) {
	        // consume as many U+003F QUESTION MARK (?) code points as possible
	        for (; hexLength < 6 && !scanner.eof; scanner.next()) {
	            if (scanner.tokenType !== QUESTIONMARK$1) {
	                break;
	            }

	            hexLength++;
	        }
	    }
	}

	var UnicodeRange = {
	    name: 'UnicodeRange',
	    structure: {
	        value: String
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;

	        this.scanner.next(); // U or u
	        scanUnicodeRange(this.scanner);

	        return {
	            type: 'UnicodeRange',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            value: this.scanner.substrToCursor(start)
	        };
	    },
	    generate: function(node) {
	        this.chunk(node.value);
	    }
	};

	var TYPE$v = tokenizer.TYPE;

	var STRING$4 = TYPE$v.String;
	var URL$3 = TYPE$v.Url;
	var RAW$2 = TYPE$v.Raw;
	var RIGHTPARENTHESIS$8 = TYPE$v.RightParenthesis;

	// url '(' S* (string | raw) S* ')'
	var Url = {
	    name: 'Url',
	    structure: {
	        value: ['String', 'Raw']
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var value;

	        this.scanner.eat(URL$3);
	        this.scanner.skipSC();

	        switch (this.scanner.tokenType) {
	            case STRING$4:
	                value = this.String();
	                break;

	            case RAW$2:
	                value = this.Raw(this.scanner.currentToken, 0, RAW$2, true, false);
	                break;

	            default:
	                this.scanner.error('String or Raw is expected');
	        }

	        this.scanner.skipSC();
	        this.scanner.eat(RIGHTPARENTHESIS$8);

	        return {
	            type: 'Url',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            value: value
	        };
	    },
	    generate: function(node) {
	        this.chunk('url');
	        this.chunk('(');
	        this.node(node.value);
	        this.chunk(')');
	    }
	};

	var Value = {
	    name: 'Value',
	    structure: {
	        children: [[]]
	    },
	    parse: function() {
	        var start = this.scanner.tokenStart;
	        var children = this.readSequence(this.scope.Value);

	        return {
	            type: 'Value',
	            loc: this.getLocation(start, this.scanner.tokenStart),
	            children: children
	        };
	    },
	    generate: function(node) {
	        this.children(node);
	    }
	};

	var WHITESPACE$7 = tokenizer.TYPE.WhiteSpace;
	var SPACE$4 = Object.freeze({
	    type: 'WhiteSpace',
	    loc: null,
	    value: ' '
	});

	var WhiteSpace = {
	    name: 'WhiteSpace',
	    structure: {
	        value: String
	    },
	    parse: function() {
	        this.scanner.eat(WHITESPACE$7);
	        return SPACE$4;

	        // return {
	        //     type: 'WhiteSpace',
	        //     loc: this.getLocation(this.scanner.tokenStart, this.scanner.tokenEnd),
	        //     value: this.scanner.consume(WHITESPACE)
	        // };
	    },
	    generate: function(node) {
	        this.chunk(node.value);
	    }
	};

	var node = {
	    AnPlusB: AnPlusB,
	    Atrule: Atrule,
	    AtrulePrelude: AtrulePrelude,
	    AttributeSelector: AttributeSelector,
	    Block: Block,
	    Brackets: Brackets,
	    CDC: CDC_1,
	    CDO: CDO_1,
	    ClassSelector: ClassSelector,
	    Combinator: Combinator,
	    Comment: Comment,
	    Declaration: Declaration,
	    DeclarationList: DeclarationList,
	    Dimension: Dimension,
	    Function: _Function,
	    HexColor: HexColor,
	    Identifier: Identifier,
	    IdSelector: IdSelector,
	    MediaFeature: MediaFeature,
	    MediaQuery: MediaQuery,
	    MediaQueryList: MediaQueryList,
	    Nth: Nth,
	    Number: _Number,
	    Operator: Operator,
	    Parentheses: Parentheses,
	    Percentage: Percentage,
	    PseudoClassSelector: PseudoClassSelector,
	    PseudoElementSelector: PseudoElementSelector,
	    Ratio: Ratio,
	    Raw: Raw,
	    Rule: Rule,
	    Selector: Selector,
	    SelectorList: SelectorList,
	    String: _String,
	    StyleSheet: StyleSheet,
	    TypeSelector: TypeSelector,
	    UnicodeRange: UnicodeRange,
	    Url: Url,
	    Value: Value,
	    WhiteSpace: WhiteSpace
	};

	var lexer = {
	    generic: true,
	    types: data.types,
	    properties: data.properties,
	    node: node
	};

	var cmpChar$2 = tokenizer.cmpChar;
	var TYPE$w = tokenizer.TYPE;

	var IDENTIFIER$g = TYPE$w.Identifier;
	var STRING$5 = TYPE$w.String;
	var NUMBER$a = TYPE$w.Number;
	var FUNCTION$4 = TYPE$w.Function;
	var URL$4 = TYPE$w.Url;
	var NUMBERSIGN$5 = TYPE$w.NumberSign;
	var LEFTPARENTHESIS$6 = TYPE$w.LeftParenthesis;
	var LEFTSQUAREBRACKET$4 = TYPE$w.LeftSquareBracket;
	var PLUSSIGN$8 = TYPE$w.PlusSign;
	var HYPHENMINUS$7 = TYPE$w.HyphenMinus;
	var COMMA$3 = TYPE$w.Comma;
	var SOLIDUS$5 = TYPE$w.Solidus;
	var ASTERISK$5 = TYPE$w.Asterisk;
	var PERCENTSIGN$1 = TYPE$w.PercentSign;
	var BACKSLASH = TYPE$w.Backslash;
	var U = 117; // 'u'.charCodeAt(0)

	var _default = function defaultRecognizer(context) {
	    switch (this.scanner.tokenType) {
	        case NUMBERSIGN$5:
	            return this.HexColor();

	        case COMMA$3:
	            context.space = null;
	            context.ignoreWSAfter = true;
	            return this.Operator();

	        case SOLIDUS$5:
	        case ASTERISK$5:
	        case PLUSSIGN$8:
	        case HYPHENMINUS$7:
	            return this.Operator();

	        case LEFTPARENTHESIS$6:
	            return this.Parentheses(this.readSequence, context.recognizer);

	        case LEFTSQUAREBRACKET$4:
	            return this.Brackets(this.readSequence, context.recognizer);

	        case STRING$5:
	            return this.String();

	        case NUMBER$a:
	            switch (this.scanner.lookupType(1)) {
	                case PERCENTSIGN$1:
	                    return this.Percentage();

	                case IDENTIFIER$g:
	                    // edge case: number with folowing \0 and \9 hack shouldn't to be a Dimension
	                    if (cmpChar$2(this.scanner.source, this.scanner.tokenEnd, BACKSLASH)) {
	                        return this.Number();
	                    } else {
	                        return this.Dimension();
	                    }

	                default:
	                    return this.Number();
	            }

	        case FUNCTION$4:
	            return this.Function(this.readSequence, context.recognizer);

	        case URL$4:
	            return this.Url();

	        case IDENTIFIER$g:
	            // check for unicode range, it should start with u+ or U+
	            if (cmpChar$2(this.scanner.source, this.scanner.tokenStart, U) &&
	                cmpChar$2(this.scanner.source, this.scanner.tokenStart + 1, PLUSSIGN$8)) {
	                return this.UnicodeRange();
	            } else {
	                return this.Identifier();
	            }
	    }
	};

	var atrulePrelude = {
	    getNode: _default
	};

	var TYPE$x = tokenizer.TYPE;

	var IDENTIFIER$h = TYPE$x.Identifier;
	var NUMBER$b = TYPE$x.Number;
	var NUMBERSIGN$6 = TYPE$x.NumberSign;
	var LEFTSQUAREBRACKET$5 = TYPE$x.LeftSquareBracket;
	var PLUSSIGN$9 = TYPE$x.PlusSign;
	var SOLIDUS$6 = TYPE$x.Solidus;
	var ASTERISK$6 = TYPE$x.Asterisk;
	var FULLSTOP$5 = TYPE$x.FullStop;
	var COLON$5 = TYPE$x.Colon;
	var GREATERTHANSIGN$3 = TYPE$x.GreaterThanSign;
	var VERTICALLINE$3 = TYPE$x.VerticalLine;
	var TILDE$2 = TYPE$x.Tilde;

	function getNode(context) {
	    switch (this.scanner.tokenType) {
	        case PLUSSIGN$9:
	        case GREATERTHANSIGN$3:
	        case TILDE$2:
	            context.space = null;
	            context.ignoreWSAfter = true;
	            return this.Combinator();

	        case SOLIDUS$6:  // /deep/
	            return this.Combinator();

	        case FULLSTOP$5:
	            return this.ClassSelector();

	        case LEFTSQUAREBRACKET$5:
	            return this.AttributeSelector();

	        case NUMBERSIGN$6:
	            return this.IdSelector();

	        case COLON$5:
	            if (this.scanner.lookupType(1) === COLON$5) {
	                return this.PseudoElementSelector();
	            } else {
	                return this.PseudoClassSelector();
	            }

	        case IDENTIFIER$h:
	        case ASTERISK$6:
	        case VERTICALLINE$3:
	            return this.TypeSelector();

	        case NUMBER$b:
	            return this.Percentage();
	    }
	}
	var selector = {
	    getNode: getNode
	};

	// https://drafts.csswg.org/css-images-4/#element-notation
	// https://developer.mozilla.org/en-US/docs/Web/CSS/element
	var element = function() {
	    this.scanner.skipSC();

	    var children = this.createSingleNodeList(
	        this.IdSelector()
	    );

	    this.scanner.skipSC();

	    return children;
	};

	// legacy IE function
	// expression '(' raw ')'
	var expression$1 = function() {
	    return this.createSingleNodeList(
	        this.Raw(this.scanner.currentToken, 0, 0, false, false)
	    );
	};

	var TYPE$y = tokenizer.TYPE;

	var IDENTIFIER$i = TYPE$y.Identifier;
	var COMMA$4 = TYPE$y.Comma;
	var SEMICOLON$5 = TYPE$y.Semicolon;
	var HYPHENMINUS$8 = TYPE$y.HyphenMinus;
	var EXCLAMATIONMARK$4 = TYPE$y.ExclamationMark;

	// var '(' ident (',' <value>? )? ')'
	var _var = function() {
	    var children = this.createList();

	    this.scanner.skipSC();

	    var identStart = this.scanner.tokenStart;

	    this.scanner.eat(HYPHENMINUS$8);
	    if (this.scanner.source.charCodeAt(this.scanner.tokenStart) !== HYPHENMINUS$8) {
	        this.scanner.error('HyphenMinus is expected');
	    }
	    this.scanner.eat(IDENTIFIER$i);

	    children.push({
	        type: 'Identifier',
	        loc: this.getLocation(identStart, this.scanner.tokenStart),
	        name: this.scanner.substrToCursor(identStart)
	    });

	    this.scanner.skipSC();

	    if (this.scanner.tokenType === COMMA$4) {
	        children.push(this.Operator());
	        children.push(this.parseCustomProperty
	            ? this.Value(null)
	            : this.Raw(this.scanner.currentToken, EXCLAMATIONMARK$4, SEMICOLON$5, false, false)
	        );
	    }

	    return children;
	};

	var value = {
	    getNode: _default,
	    '-moz-element': element,
	    'element': element,
	    'expression': expression$1,
	    'var': _var
	};

	var scope = {
	    AtrulePrelude: atrulePrelude,
	    Selector: selector,
	    Value: value
	};

	var fontFace = {
	    parse: {
	        prelude: null,
	        block: function() {
	            return this.Block(true);
	        }
	    }
	};

	var TYPE$z = tokenizer.TYPE;

	var STRING$6 = TYPE$z.String;
	var IDENTIFIER$j = TYPE$z.Identifier;
	var URL$5 = TYPE$z.Url;
	var LEFTPARENTHESIS$7 = TYPE$z.LeftParenthesis;

	var _import = {
	    parse: {
	        prelude: function() {
	            var children = this.createList();

	            this.scanner.skipSC();

	            switch (this.scanner.tokenType) {
	                case STRING$6:
	                    children.push(this.String());
	                    break;

	                case URL$5:
	                    children.push(this.Url());
	                    break;

	                default:
	                    this.scanner.error('String or url() is expected');
	            }

	            if (this.scanner.lookupNonWSType(0) === IDENTIFIER$j ||
	                this.scanner.lookupNonWSType(0) === LEFTPARENTHESIS$7) {
	                children.push(this.WhiteSpace());
	                children.push(this.MediaQueryList());
	            }

	            return children;
	        },
	        block: null
	    }
	};

	var media = {
	    parse: {
	        prelude: function() {
	            return this.createSingleNodeList(
	                this.MediaQueryList()
	            );
	        },
	        block: function() {
	            return this.Block(false);
	        }
	    }
	};

	var page = {
	    parse: {
	        prelude: function() {
	            return this.createSingleNodeList(
	                this.SelectorList()
	            );
	        },
	        block: function() {
	            return this.Block(true);
	        }
	    }
	};

	var TYPE$A = tokenizer.TYPE;

	var WHITESPACE$8 = TYPE$A.WhiteSpace;
	var COMMENT$7 = TYPE$A.Comment;
	var IDENTIFIER$k = TYPE$A.Identifier;
	var FUNCTION$5 = TYPE$A.Function;
	var LEFTPARENTHESIS$8 = TYPE$A.LeftParenthesis;
	var HYPHENMINUS$9 = TYPE$A.HyphenMinus;
	var COLON$6 = TYPE$A.Colon;

	function consumeRaw$5() {
	    return this.createSingleNodeList(
	        this.Raw(this.scanner.currentToken, 0, 0, false, false)
	    );
	}

	function parentheses() {
	    var index = 0;

	    this.scanner.skipSC();

	    // TODO: make it simplier
	    if (this.scanner.tokenType === IDENTIFIER$k) {
	        index = 1;
	    } else if (this.scanner.tokenType === HYPHENMINUS$9 &&
	               this.scanner.lookupType(1) === IDENTIFIER$k) {
	        index = 2;
	    }

	    if (index !== 0 && this.scanner.lookupNonWSType(index) === COLON$6) {
	        return this.createSingleNodeList(
	            this.Declaration()
	        );
	    }

	    return readSequence.call(this);
	}

	function readSequence() {
	    var children = this.createList();
	    var space = null;
	    var child;

	    this.scanner.skipSC();

	    scan:
	    while (!this.scanner.eof) {
	        switch (this.scanner.tokenType) {
	            case WHITESPACE$8:
	                space = this.WhiteSpace();
	                continue;

	            case COMMENT$7:
	                this.scanner.next();
	                continue;

	            case FUNCTION$5:
	                child = this.Function(consumeRaw$5, this.scope.AtrulePrelude);
	                break;

	            case IDENTIFIER$k:
	                child = this.Identifier();
	                break;

	            case LEFTPARENTHESIS$8:
	                child = this.Parentheses(parentheses, this.scope.AtrulePrelude);
	                break;

	            default:
	                break scan;
	        }

	        if (space !== null) {
	            children.push(space);
	            space = null;
	        }

	        children.push(child);
	    }

	    return children;
	}

	var supports = {
	    parse: {
	        prelude: function() {
	            var children = readSequence.call(this);

	            if (this.getFirstListNode(children) === null) {
	                this.scanner.error('Condition is expected');
	            }

	            return children;
	        },
	        block: function() {
	            return this.Block(false);
	        }
	    }
	};

	var atrule = {
	    'font-face': fontFace,
	    'import': _import,
	    'media': media,
	    'page': page,
	    'supports': supports
	};

	var dir = {
	    parse: function() {
	        return this.createSingleNodeList(
	            this.Identifier()
	        );
	    }
	};

	var has$1 = {
	    parse: function() {
	        return this.createSingleNodeList(
	            this.SelectorList()
	        );
	    }
	};

	var lang = {
	    parse: function() {
	        return this.createSingleNodeList(
	            this.Identifier()
	        );
	    }
	};

	var selectorList = {
	    parse: function selectorList() {
	        return this.createSingleNodeList(
	            this.SelectorList()
	        );
	    }
	};

	var matches = selectorList;

	var not = selectorList;

	var ALLOW_OF_CLAUSE = true;

	var nthWithOfClause = {
	    parse: function nthWithOfClause() {
	        return this.createSingleNodeList(
	            this.Nth(ALLOW_OF_CLAUSE)
	        );
	    }
	};

	var nthChild = nthWithOfClause;

	var nthLastChild = nthWithOfClause;

	var DISALLOW_OF_CLAUSE = false;

	var nth$1 = {
	    parse: function nth() {
	        return this.createSingleNodeList(
	            this.Nth(DISALLOW_OF_CLAUSE)
	        );
	    }
	};

	var nthLastOfType = nth$1;

	var nthOfType = nth$1;

	var slotted = {
	    parse: function compoundSelector() {
	        return this.createSingleNodeList(
	            this.Selector()
	        );
	    }
	};

	var pseudo = {
	    'dir': dir,
	    'has': has$1,
	    'lang': lang,
	    'matches': matches,
	    'not': not,
	    'nth-child': nthChild,
	    'nth-last-child': nthLastChild,
	    'nth-last-of-type': nthLastOfType,
	    'nth-of-type': nthOfType,
	    'slotted': slotted
	};

	var parser = {
	    parseContext: {
	        default: 'StyleSheet',
	        stylesheet: 'StyleSheet',
	        atrule: 'Atrule',
	        atrulePrelude: function(options) {
	            return this.AtrulePrelude(options.atrule ? String(options.atrule) : null);
	        },
	        mediaQueryList: 'MediaQueryList',
	        mediaQuery: 'MediaQuery',
	        rule: 'Rule',
	        selectorList: 'SelectorList',
	        selector: 'Selector',
	        block: function() {
	            return this.Block(true);
	        },
	        declarationList: 'DeclarationList',
	        declaration: 'Declaration',
	        value: 'Value'
	    },
	    scope: scope,
	    atrule: atrule,
	    pseudo: pseudo,
	    node: node
	};

	var walker = {
	    node: node
	};

	function merge() {
	    var dest = {};

	    for (var i = 0; i < arguments.length; i++) {
	        var src = arguments[i];
	        for (var key in src) {
	            dest[key] = src[key];
	        }
	    }

	    return dest;
	}

	var syntax = create$5.create(
	    merge(
	        lexer,
	        parser,
	        walker
	    )
	);

	var lib = syntax;

	class Sheet {
		constructor(url, hooks) {

			if (hooks) {
				this.hooks = hooks;
			} else {
				this.hooks = {};
				this.hooks.onUrl = new Hook(this);
				this.hooks.onAtPage = new Hook(this);
				this.hooks.onAtMedia = new Hook(this);
				this.hooks.onRule = new Hook(this);
				this.hooks.onDeclaration = new Hook(this);
				this.hooks.onContent = new Hook(this);
				this.hooks.onImport = new Hook(this);

				this.hooks.beforeTreeParse = new Hook(this);
				this.hooks.beforeTreeWalk = new Hook(this);
				this.hooks.afterTreeWalk = new Hook(this);
			}

			try {
				this.url = new URL(url, window.location.href);
			} catch (e) {
				this.url = new URL(window.location.href);
			}
		}



		// parse
		async parse(text) {
			this.text = text;

			await this.hooks.beforeTreeParse.trigger(this.text, this);

			// send to csstree
			this.ast = lib.parse(this._text);

			await this.hooks.beforeTreeWalk.trigger(this.ast);

			// Replace urls
			this.replaceUrls(this.ast);

			// Scope
			this.id = UUID();
			// this.addScope(this.ast, this.uuid);

			// Replace IDs with data-id
			this.replaceIds(this.ast);

			this.imported = [];

			// Trigger Hooks
			this.urls(this.ast);
			this.rules(this.ast);
			this.atrules(this.ast);

			await this.hooks.afterTreeWalk.trigger(this.ast, this);

			// return ast
			return this.ast;
		}

		insertRule(rule) {
			let inserted = this.ast.children.appendData(rule);
			inserted.forEach((item) => {
				this.declarations(item);
			});
		}

		urls(ast) {
			lib.walk(ast, {
				visit: "Url",
				enter: (node, item, list) => {
					this.hooks.onUrl.trigger(node, item, list);
				}
			});
		}

		atrules(ast) {
			lib.walk(ast, {
				visit: "Atrule",
				enter: (node, item, list) => {
					const basename = lib.keyword(node.name).basename;

					if (basename === "page") {
						this.hooks.onAtPage.trigger(node, item, list);
						this.declarations(node, item, list);
					}

					if (basename === "media") {
						this.hooks.onAtMedia.trigger(node, item, list);
						this.declarations(node, item, list);
					}

					if (basename === "import") {
						this.hooks.onImport.trigger(node, item, list);
						this.imports(node, item, list);
					}
				}
			});
		}


		rules(ast) {
			lib.walk(ast, {
				visit: "Rule",
				enter: (ruleNode, ruleItem, rulelist) => {
					// console.log("rule", ruleNode);

					this.hooks.onRule.trigger(ruleNode, ruleItem, rulelist);
					this.declarations(ruleNode, ruleItem, rulelist);
				}
			});
		}

		declarations(ruleNode, ruleItem, rulelist) {
			lib.walk(ruleNode, {
				visit: "Declaration",
				enter: (declarationNode, dItem, dList) => {
					// console.log(declarationNode);

					this.hooks.onDeclaration.trigger(declarationNode, dItem, dList, {ruleNode, ruleItem, rulelist});

					if (declarationNode.property === "content") {
						lib.walk(declarationNode, {
							visit: "Function",
							enter: (funcNode, fItem, fList) => {
								this.hooks.onContent.trigger(funcNode, fItem, fList, {declarationNode, dItem, dList}, {ruleNode, ruleItem, rulelist});
							}
						});
					}

				}
			});
		}

		replaceUrls(ast) {
			lib.walk(ast, {
				visit: "Url",
				enter: (node, item, list) => {
					let href = node.value.value.replace(/["']/g, "");
					let url = new URL(href, this.url);
					node.value.value = url.toString();
				}
			});
		}

		addScope(ast, id) {
			// Get all selector lists
			// add an id
			lib.walk(ast, {
				visit: "Selector",
				enter: (node, item, list) => {
					let children = node.children;
					children.prepend(children.createItem({
						type: "WhiteSpace",
						value: " "
					}));
					children.prepend(children.createItem({
						type: "IdSelector",
						name: id,
						loc: null,
						children: null
					}));
				}
			});
		}

		getNamedPageSelectors(ast) {
			let namedPageSelectors = {};
			lib.walk(ast, {
				visit: "Rule",
				enter: (node, item, list) => {
					lib.walk(node, {
						visit: "Declaration",
						enter: (declaration, dItem, dList) => {
							if (declaration.property === "page") {
								let value = declaration.value.children.first();
								let name = value.name;
								let selector = lib.generate(node.prelude);
								namedPageSelectors[name] = {
									name: name,
									selector: selector
								};

								// dList.remove(dItem);

								// Add in page break
								declaration.property = "break-before";
								value.type = "Identifier";
								value.name = "always";

							}
						}
					});
				}
			});
			return namedPageSelectors;
		}

		replaceIds(ast) {
			lib.walk(ast, {
				visit: "Rule",
				enter: (node, item, list) => {

					lib.walk(node, {
						visit: "IdSelector",
						enter: (idNode, idItem, idList) => {
							let name = idNode.name;
							idNode.flags = null;
							idNode.matcher = "=";
							idNode.name = {type: "Identifier", loc: null, name: "data-id"};
							idNode.type = "AttributeSelector";
							idNode.value = {type: "String", loc: null, value: `"${name}"`};
						}
					});
				}
			});
		}

		imports(node, item, list) {
			// console.log("import", node, item, list);
			let queries = [];
			lib.walk(node, {
				visit: "MediaQuery",
				enter: (mqNode, mqItem, mqList) => {
					lib.walk(mqNode, {
						visit: "Identifier",
						enter: (identNode, identItem, identList) => {
							queries.push(identNode.name);
						}
					});
				}
			});

			// Just basic media query support for now
			let shouldNotApply = queries.some((query, index) => {
				let q = query;
				if (q === "not") {
					q = queries[index + 1];
					return !(q === "screen" || q === "speech");
				} else {
					return (q === "screen" || q === "speech");
				}
			});

			if (shouldNotApply) {
				return;
			}

			lib.walk(node, {
				visit: "String",
				enter: (urlNode, urlItem, urlList) => {
					let href = urlNode.value.replace(/["']/g, "");
					let url = new URL(href, this.url);
					let value = url.toString();

					this.imported.push(value);

					// Remove the original
					list.remove(item);
				}
			});
		}

		set text(t) {
			this._text = t;
		}

		get text() {
			return this._text;
		}

		// generate string
		toString(ast) {
			return lib.generate(ast || this.ast);
		}
	}

	var baseStyles = `
:root {
	--pagedjs-width: 8.5in;
	--pagedjs-height: 11in;
	--pagedjs-pagebox-width: 8.5in;
	--pagedjs-pagebox-height: 11in;
	--pagedjs-margin-top: 1in;
	--pagedjs-margin-right: 1in;
	--pagedjs-margin-bottom: 1in;
	--pagedjs-margin-left: 1in;
	--pagedjs-bleed-top: 0mm;
	--pagedjs-bleed-right: 0mm;
	--pagedjs-bleed-bottom: 0mm;
	--pagedjs-bleed-left: 0mm;
	--pagedjs-crop-color: black;
	--pagedjs-crop-offset: 2mm;
	--pagedjs-crop-stroke: 1px;
	--pagedjs-cross-size: 5mm;
	--pagedjs-mark-cross-display: none;
	--pagedjs-mark-crop-display: none;
	--pagedjs-page-count: 0;
}

@page {
	size: letter;
	margin: 0;
}

.pagedjs_sheet {
	box-sizing: border-box;
	width: var(--pagedjs-width);
	height: var(--pagedjs-height);
	overflow: hidden;
	position: relative;
	display: grid;
	grid-template-columns: [bleed-left] var(--pagedjs-bleed-left) [sheet-center] calc(var(--pagedjs-width) - var(--pagedjs-bleed-left) - var(--pagedjs-bleed-right)) [bleed-right] var(--pagedjs-bleed-right);
	grid-template-rows: [bleed-top] var(--pagedjs-bleed-top) [sheet-middle] calc(var(--pagedjs-height) - var(--pagedjs-bleed-top) - var(--pagedjs-bleed-bottom)) [bleed-bottom] var(--pagedjs-bleed-bottom);
}

.pagedjs_bleed {
	display: flex;
	align-items: center;
	justify-content: center;
	flex-wrap: nowrap;
	overflow: hidden;
}

.pagedjs_bleed-top {
	grid-column: bleed-left / -1;
	grid-row: bleed-top;
	flex-direction: row;
}

.pagedjs_bleed-bottom {
	grid-column: bleed-left / -1;
	grid-row: bleed-bottom;
	flex-direction: row;
}

.pagedjs_bleed-left {
	grid-column: bleed-left;
	grid-row: bleed-top / -1;
	flex-direction: column;
}

.pagedjs_bleed-right {
	grid-column: bleed-right;
	grid-row: bleed-top / -1;
	flex-direction: column;
}

.pagedjs_marks-crop {
	display: var(--pagedjs-mark-crop-display);
	flex-grow: 0;
	flex-shrink: 0;
}

.pagedjs_bleed-top .pagedjs_marks-crop:nth-child(1),
.pagedjs_bleed-bottom .pagedjs_marks-crop:nth-child(1) {
	width: calc(var(--pagedjs-bleed-left) - var(--pagedjs-crop-stroke));
	border-right: var(--pagedjs-crop-stroke) solid var(--pagedjs-crop-color);
}

.pagedjs_bleed-top .pagedjs_marks-crop:nth-child(3),
.pagedjs_bleed-bottom .pagedjs_marks-crop:nth-child(3) {
	width: calc(var(--pagedjs-bleed-right) - var(--pagedjs-crop-stroke));
	border-left: var(--pagedjs-crop-stroke) solid var(--pagedjs-crop-color);
}

.pagedjs_bleed-top .pagedjs_marks-crop {
	align-self: flex-start;
	height: calc(var(--pagedjs-bleed-top) - var(--pagedjs-crop-offset));
}

.pagedjs_bleed-bottom .pagedjs_marks-crop {
	align-self: flex-end;
	height: calc(var(--pagedjs-bleed-bottom) - var(--pagedjs-crop-offset));
}

.pagedjs_bleed-left .pagedjs_marks-crop:nth-child(1),
.pagedjs_bleed-right .pagedjs_marks-crop:nth-child(1) {
	height: calc(var(--pagedjs-bleed-top) - var(--pagedjs-crop-stroke));
	border-bottom: var(--pagedjs-crop-stroke) solid var(--pagedjs-crop-color);
}

.pagedjs_bleed-left .pagedjs_marks-crop:nth-child(3),
.pagedjs_bleed-right .pagedjs_marks-crop:nth-child(3) {
	height: calc(var(--pagedjs-bleed-bottom) - var(--pagedjs-crop-stroke));
	border-top: var(--pagedjs-crop-stroke) solid var(--pagedjs-crop-color);
}

.pagedjs_bleed-left .pagedjs_marks-crop {
	width: calc(var(--pagedjs-bleed-left) - var(--pagedjs-crop-offset));
	align-self: flex-start;
}

.pagedjs_bleed-right .pagedjs_marks-crop {
	width: calc(var(--pagedjs-bleed-right) - var(--pagedjs-crop-offset));
	align-self: flex-end;
}

.pagedjs_marks-middle {
	display: flex;
	flex-grow: 1;
	flex-shrink: 0;
	align-items: center;
	justify-content: center;
}

.pagedjs_marks-cross {
	display: var(--pagedjs-mark-cross-display);
	background-image: url(data:image/svg+xml;base64,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);
  background-repeat: no-repeat;
  background-position: 50% 50%;
  background-size: var(--pagedjs-cross-size);

  z-index: 2147483647;
	width: var(--pagedjs-cross-size);
	height: var(--pagedjs-cross-size);
}

.pagedjs_pagebox {
	box-sizing: border-box;
	width: var(--pagedjs-pagebox-width);
	height: var(--pagedjs-pagebox-height);
	position: relative;
	display: grid;
	grid-template-columns: [left] var(--pagedjs-margin-left) [center] calc(var(--pagedjs-pagebox-width) - var(--pagedjs-margin-left) - var(--pagedjs-margin-right)) [right] var(--pagedjs-margin-right);
	grid-template-rows: [header] var(--pagedjs-margin-top) [page] calc(var(--pagedjs-pagebox-height) - var(--pagedjs-margin-top) - var(--pagedjs-margin-bottom)) [footer] var(--pagedjs-margin-bottom);
	grid-column: sheet-center;
	grid-row: sheet-middle;
}

.pagedjs_pagebox * {
	box-sizing: border-box;
}

.pagedjs_margin-top {
	width: calc(var(--pagedjs-pagebox-width) - var(--pagedjs-margin-left) - var(--pagedjs-margin-right));
	height: var(--pagedjs-margin-top);
	grid-column: center;
	grid-row: header;
	flex-wrap: nowrap;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	grid-template-rows: 100%;
}

.pagedjs_margin-top-left-corner-holder {
	width: var(--pagedjs-margin-left);
	height: var(--pagedjs-margin-top);
	display: flex;
	grid-column: left;
	grid-row: header;
}

.pagedjs_margin-top-right-corner-holder {
	width: var(--pagedjs-margin-right);
	height: var(--pagedjs-margin-top);
	display: flex;
	grid-column: right;
	grid-row: header;
}

.pagedjs_margin-top-left-corner {
	width: var(--pagedjs-margin-left);
}

.pagedjs_margin-top-right-corner {
	width: var(--pagedjs-margin-right);
}

.pagedjs_margin-right {
	height: calc(var(--pagedjs-pagebox-height) - var(--pagedjs-margin-top) - var(--pagedjs-margin-bottom));
	width: var(--pagedjs-margin-right);
	right: 0;
	grid-column: right;
	grid-row: page;
	display: grid;
	grid-template-rows: repeat(3, 33.3333%);
	grid-template-columns: 100%;
}

.pagedjs_margin-bottom {
	width: calc(var(--pagedjs-pagebox-width) - var(--pagedjs-margin-left) - var(--pagedjs-margin-right));
	height: var(--pagedjs-margin-bottom);
	grid-column: center;
	grid-row: footer;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	grid-template-rows: 100%;
}

.pagedjs_margin-bottom-left-corner-holder {
	width: var(--pagedjs-margin-left);
	height: var(--pagedjs-margin-bottom);
	display: flex;
	grid-column: left;
	grid-row: footer;
}

.pagedjs_margin-bottom-right-corner-holder {
	width: var(--pagedjs-margin-right);
	height: var(--pagedjs-margin-bottom);
	display: flex;
	grid-column: right;
	grid-row: footer;
}

.pagedjs_margin-bottom-left-corner {
	width: var(--pagedjs-margin-left);
}

.pagedjs_margin-bottom-right-corner {
	width: var(--pagedjs-margin-right);
}



.pagedjs_margin-left {
	height: calc(var(--pagedjs-pagebox-height) - var(--pagedjs-margin-top) - var(--pagedjs-margin-bottom));
	width: var(--pagedjs-margin-left);
	grid-column: left;
	grid-row: page;
	display: grid;
	grid-template-rows: repeat(3, 33.33333%);
	grid-template-columns: 100%;
}

.pagedjs_pages .pagedjs_pagebox .pagedjs_margin:not(.hasContent) {
	visibility: hidden;
}

.pagedjs_pagebox > .pagedjs_area {
	grid-column: center;
	grid-row: page;
	width: 100%;
	height: 100%;
}

.pagedjs_pagebox > .pagedjs_area > .pagedjs_page_content {
	width: 100%;
	height: 100%;
	position: relative;
	column-fill: auto;
}

.pagedjs_page {
	counter-increment: page;
	width: var(--pagedjs-width);
	height: var(--pagedjs-height);
}

.pagedjs_pages {
	counter-reset: pages var(--pagedjs-page-count);
}


.pagedjs_pagebox .pagedjs_margin-top-left-corner,
.pagedjs_pagebox .pagedjs_margin-top-right-corner,
.pagedjs_pagebox .pagedjs_margin-bottom-left-corner,
.pagedjs_pagebox .pagedjs_margin-bottom-right-corner,
.pagedjs_pagebox .pagedjs_margin-top-left,
.pagedjs_pagebox .pagedjs_margin-top-right,
.pagedjs_pagebox .pagedjs_margin-bottom-left,
.pagedjs_pagebox .pagedjs_margin-bottom-right,
.pagedjs_pagebox .pagedjs_margin-top-center,
.pagedjs_pagebox .pagedjs_margin-bottom-center,
.pagedjs_pagebox .pagedjs_margin-top-center,
.pagedjs_pagebox .pagedjs_margin-bottom-center,
.pagedjs_margin-right-middle,
.pagedjs_margin-left-middle  {
	display: flex;
	align-items: center;
}

.pagedjs_margin-right-top,
.pagedjs_margin-left-top  {
	display: flex;
	align-items: flex-top;
}


.pagedjs_margin-right-bottom,
.pagedjs_margin-left-bottom  {
	display: flex;
	align-items: flex-end;
}



/*
.pagedjs_pagebox .pagedjs_margin-top-center,
.pagedjs_pagebox .pagedjs_margin-bottom-center {
	height: 100%;
	display: none;
	align-items: center;
	flex: 1 0 33%;
	margin: 0 auto;
}

.pagedjs_pagebox .pagedjs_margin-top-left-corner,
.pagedjs_pagebox .pagedjs_margin-top-right-corner,
.pagedjs_pagebox .pagedjs_margin-bottom-right-corner,
.pagedjs_pagebox .pagedjs_margin-bottom-left-corner {
	display: none;
	align-items: center;
}

.pagedjs_pagebox .pagedjs_margin-left-top,
.pagedjs_pagebox .pagedjs_margin-right-top {
	display: none;
	align-items: flex-start;
}

.pagedjs_pagebox .pagedjs_margin-right-middle,
.pagedjs_pagebox .pagedjs_margin-left-middle {
	display: none;
	align-items: center;
}

.pagedjs_pagebox .pagedjs_margin-left-bottom,
.pagedjs_pagebox .pagedjs_margin-right-bottom {
	display: none;
	align-items: flex-end;
}
*/

.pagedjs_pagebox .pagedjs_margin-top-left,
.pagedjs_pagebox .pagedjs_margin-top-right-corner,
.pagedjs_pagebox .pagedjs_margin-bottom-left,
.pagedjs_pagebox .pagedjs_margin-bottom-right-corner { text-align: left; }

.pagedjs_pagebox .pagedjs_margin-top-left-corner,
.pagedjs_pagebox .pagedjs_margin-top-right,
.pagedjs_pagebox .pagedjs_margin-bottom-left-corner,
.pagedjs_pagebox .pagedjs_margin-bottom-right { text-align: right; }

.pagedjs_pagebox .pagedjs_margin-top-center,
.pagedjs_pagebox .pagedjs_margin-bottom-center,
.pagedjs_pagebox .pagedjs_margin-left-top,
.pagedjs_pagebox .pagedjs_margin-left-middle,
.pagedjs_pagebox .pagedjs_margin-left-bottom,
.pagedjs_pagebox .pagedjs_margin-right-top,
.pagedjs_pagebox .pagedjs_margin-right-middle,
.pagedjs_pagebox .pagedjs_margin-right-bottom { text-align: center; }

.pagedjs_pages .pagedjs_margin .pagedjs_margin-content {
	width: 100%;
}

.pagedjs_pages .pagedjs_margin-left .pagedjs_margin-content::after,
.pagedjs_pages .pagedjs_margin-top .pagedjs_margin-content::after,
.pagedjs_pages .pagedjs_margin-right .pagedjs_margin-content::after,
.pagedjs_pages .pagedjs_margin-bottom .pagedjs_margin-content::after {
	display: block;
}

.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-to] {
	margin-bottom: unset;
	padding-bottom: unset;
}

.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-from] {
	text-indent: unset;
	margin-top: unset;
	padding-top: unset;
	initial-letter: unset;
}

.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-from] > *::first-letter,
.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-from]::first-letter {
	color: unset;
	font-size: unset;
	font-weight: unset;
	font-family: unset;
	color: unset;
	line-height: unset;
	float: unset;
	padding: unset;
	margin: unset;
}

.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-to]:after,
.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-to]::after {
	content: unset;
}

.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-from]:before,
.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-from]::before {
	content: unset;
}

.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div li[data-split-from]:first-of-type {
	list-style: none;
}

/*
[data-page]:not([data-split-from]),
[data-break-before="page"]:not([data-split-from]),
[data-break-before="always"]:not([data-split-from]),
[data-break-before="left"]:not([data-split-from]),
[data-break-before="right"]:not([data-split-from]),
[data-break-before="recto"]:not([data-split-from]),
[data-break-before="verso"]:not([data-split-from])
{
	break-before: column;
}

[data-page]:not([data-split-to]),
[data-break-after="page"]:not([data-split-to]),
[data-break-after="always"]:not([data-split-to]),
[data-break-after="left"]:not([data-split-to]),
[data-break-after="right"]:not([data-split-to]),
[data-break-after="recto"]:not([data-split-to]),
[data-break-after="verso"]:not([data-split-to])
{
	break-after: column;
}
*/

.pagedjs_clear-after::after {
	content: none !important;
}

img {
	height: auto;
}

@media print {
	html {
		width: 100%;
		height: 100%;
	}
	body {
		margin: 0;
		padding: 0;
		width: 100% !important;
		height: 100% !important;
		min-width: 100%;
		max-width: 100%;
		min-height: 100%;
		max-height: 100%;
	}
	.pagedjs_pages {
		width: var(--pagedjs-width);
		display: block !important;
		transform: none !important;
		height: 100% !important;
		min-height: 100%;
		max-height: 100%;
		overflow: visible;
	}
	.pagedjs_page {
		margin: 0;
		padding: 0;
		max-height: 100%;
		min-height: 100%;
		height: 100% !important;
		page-break-after: always;
		break-after: page;
	}
	.pagedjs_sheet {
		margin: 0;
		padding: 0;
		max-height: 100%;
		min-height: 100%;
		height: 100% !important;
	}
}
`;

	async function request(url, options={}) {
		return new Promise(function(resolve, reject) {
			let request = new XMLHttpRequest();

			request.open(options.method || 'get', url, true);

			for (let i in options.headers) {
				request.setRequestHeader(i, options.headers[i]);
			}

			request.withCredentials = options.credentials=='include';

			request.onload = () => {
	 			// Chrome returns a status code of 0 for local files
	 			const status = request.status === 0 && url.startsWith('file://') ? 200 : request.status;
				resolve(new Response(request.responseText, {status}));
			};

			request.onerror = reject;

			request.send(options.body || null);
		});
	}

	class Polisher {
		constructor(setup) {
			this.sheets = [];
			this.inserted = [];

			this.hooks = {};
			this.hooks.onUrl = new Hook(this);
			this.hooks.onAtPage = new Hook(this);
			this.hooks.onAtMedia = new Hook(this);
			this.hooks.onRule = new Hook(this);
			this.hooks.onDeclaration = new Hook(this);
			this.hooks.onContent = new Hook(this);
			this.hooks.onImport = new Hook(this);

			this.hooks.beforeTreeParse = new Hook(this);
			this.hooks.beforeTreeWalk = new Hook(this);
			this.hooks.afterTreeWalk = new Hook(this);

			if (setup !== false) {
				this.setup();
			}
		}

		setup() {
			this.base = this.insert(baseStyles);
			this.styleEl = document.createElement("style");
			document.head.appendChild(this.styleEl);
			this.styleSheet = this.styleEl.sheet;
			return this.styleSheet;
		}

		async add() {
			let fetched = [];
			let urls = [];

			for (var i = 0; i < arguments.length; i++) {
				let f;

				if (typeof arguments[i] === "object") {
					for (let url in arguments[i]) {
						let obj = arguments[i];
						f = new Promise(function(resolve, reject) {
							urls.push(url);
							resolve(obj[url]);
						});
					}
				} else {
					urls.push(arguments[i]);
					f = request(arguments[i]).then((response) => {
						return response.text();
					});
				}


				fetched.push(f);
			}

			return await Promise.all(fetched)
				.then(async (originals) => {
					let text = "";
					for (let index = 0; index < originals.length; index++) {
						text = await this.convertViaSheet(originals[index], urls[index]);
						this.insert(text);
					}
					return text;
				});
		}

		async convertViaSheet(cssStr, href) {
			let sheet = new Sheet(href, this.hooks);
			await sheet.parse(cssStr);

			// Insert the imported sheets first
			for (let url of sheet.imported) {
				let str = await request(url).then((response) => {
					return response.text();
				});
				let text = await this.convertViaSheet(str, url);
				this.insert(text);
			}

			this.sheets.push(sheet);

			if (typeof sheet.width !== "undefined") {
				this.width = sheet.width;
			}
			if (typeof sheet.height !== "undefined") {
				this.height = sheet.height;
			}
			if (typeof sheet.orientation !== "undefined") {
				this.orientation = sheet.orientation;
			}
			return sheet.toString();
		}

		insert(text){
			let head = document.querySelector("head");
			let style = document.createElement("style");
			style.type = "text/css";
			style.setAttribute("data-pagedjs-inserted-styles", "true");

			style.appendChild(document.createTextNode(text));

			head.appendChild(style);

			this.inserted.push(style);
			return style;
		}

		destroy() {
			this.styleEl.remove();
			this.inserted.forEach((s) => {
				s.remove();
			});
			this.sheets = [];
		}
	}

	class Handler {
		constructor(chunker, polisher, caller) {
			let hooks = Object.assign({}, chunker && chunker.hooks, polisher && polisher.hooks, caller && caller.hooks);
			this.chunker = chunker;
			this.polisher = polisher;
			this.caller = caller;

			for (let name in hooks) {
				if (name in this) {
					let hook = hooks[name];
					hook.register(this[name].bind(this));
				}
			}
		}
	}

	eventEmitter(Handler.prototype);

	// https://www.w3.org/TR/css3-page/#page-size-prop

	var pageSizes = {
		"A0": {
			width: {
				value: 841,
				unit: "mm"
			},
			height: {
				value: 1189,
				unit: "mm"
			}
		},
		"A1": {
			width: {
				value: 594,
				unit: "mm"
			},
			height: {
				value: 841,
				unit: "mm"
			}
		},
		"A2": {
			width: {
				value: 420,
				unit: "mm"
			},
			height: {
				value: 594,
				unit: "mm"
			}
		},
		"A3": {
			width: {
				value: 297,
				unit: "mm"
			},
			height: {
				value: 420,
				unit: "mm"
			}
		},
		"A4": {
			width: {
				value: 210,
				unit: "mm"
			},
			height: {
				value: 297,
				unit: "mm"
			}
		},
		"A5": {
			width: {
				value: 148,
				unit: "mm"
			},
			height: {
				value: 210,
				unit: "mm"
			}
		},
		"A6": {
			width: {
				value: 105,
				unit: "mm"
			},
			height: {
				value: 148,
				unit: "mm"
			}
		},
		"A7": {
			width: {
				value: 74,
				unit: "mm"
			},
			height: {
				value: 105,
				unit: "mm"
			}
		},
		"A8": {
			width: {
				value: 52,
				unit: "mm"
			},
			height: {
				value: 74,
				unit: "mm"
			}
		},
		"A9": {
			width: {
				value: 37,
				unit: "mm"
			},
			height: {
				value: 52,
				unit: "mm"
			}
		},
		"A10": {
			width: {
				value: 26,
				unit: "mm"
			},
			height: {
				value: 37,
				unit: "mm"
			}
		},
		"B4": {
			width: {
				value: 250,
				unit: "mm"
			},
			height: {
				value: 353,
				unit: "mm"
			}
		},
		"B5": {
			width: {
				value: 176,
				unit: "mm"
			},
			height: {
				value: 250,
				unit: "mm"
			}
		},
		"letter": {
			width: {
				value: 8.5,
				unit: "in"
			},
			height: {
				value: 11,
				unit: "in"
			}
		},
		"legal": {
			width: {
				value: 8.5,
				unit: "in"
			},
			height: {
				value: 14,
				unit: "in"
			}
		},
		"ledger": {
			width: {
				value: 11,
				unit: "in"
			},
			height: {
				value: 17,
				unit: "in"
			}
		}
	};

	class AtPage extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);

			this.pages = {};

			this.width = undefined;
			this.height = undefined;
			this.orientation = undefined;

			this.marginalia = {};
		}

		pageModel(selector) {
			return {
				selector: selector,
				name: undefined,
				psuedo: undefined,
				nth: undefined,
				marginalia: {},
				width: undefined,
				height: undefined,
				orientation: undefined,
				margin : {
					top: {},
					right: {},
					left: {},
					bottom: {}
				},
				block: {},
				marks: undefined
			};
		}

		// Find and Remove @page rules
		onAtPage(node, item, list) {
			let page, marginalia;
			let selector = "";
			let named, psuedo, nth;
			let needsMerge = false;

			if (node.prelude) {
				named = this.getTypeSelector(node);
				psuedo = this.getPsuedoSelector(node);
				nth = this.getNthSelector(node);
				selector = lib.generate(node.prelude);
			} else {
				selector = "*";
			}

			if (selector in this.pages) {
				// this.pages[selector] = Object.assign(this.pages[selector], page);
				// console.log("after", selector, this.pages[selector]);

				// this.pages[selector].added = false;
				page = this.pages[selector];
				marginalia = this.replaceMarginalia(node);
				needsMerge = true;
			} else {
				page = this.pageModel(selector);
				marginalia = this.replaceMarginalia(node);
				this.pages[selector] = page;
			}

			page.name = named;
			page.psuedo = psuedo;
			page.nth = nth;

			if (needsMerge) {
				page.marginalia = Object.assign(page.marginalia, marginalia);
			} else {
				page.marginalia = marginalia;
			}

			let declarations = this.replaceDeclartations(node);

			if (declarations.size) {
				page.size = declarations.size;
				page.width = declarations.size.width;
				page.height = declarations.size.height;
				page.orientation = declarations.size.orientation;
				page.format = declarations.size.format;
			}

			if (declarations.bleed && declarations.bleed[0] != "auto") {
				switch (declarations.bleed.length) {
					case 4: // top right bottom left
						page.bleed = {
							top: declarations.bleed[0],
							right: declarations.bleed[1],
							bottom: declarations.bleed[2],
							left: declarations.bleed[3]
						};
						break;
					case 3: // top right bottom right
						page.bleed = {
							top: declarations.bleed[0],
							right: declarations.bleed[1],
							bottom: declarations.bleed[2],
							left: declarations.bleed[1]
						};
						break;
					case 2: // top right top right
						page.bleed = {
							top: declarations.bleed[0],
							right: declarations.bleed[1],
							bottom: declarations.bleed[0],
							left: declarations.bleed[1]
						};
						break;
					default:
						page.bleed = {
							top: declarations.bleed[0],
							right: declarations.bleed[0],
							bottom: declarations.bleed[0],
							left: declarations.bleed[0]
						};
				}
			}

			if (declarations.marks) {
				if (!declarations.bleed || declarations.bleed && declarations.bleed[0] === "auto") {
					// Spec say 6pt, but needs more space for marks
					page.bleed = {
						top: { value: 6, unit: "mm" },
						right: { value: 6, unit: "mm" },
						bottom: { value: 6, unit: "mm" },
						left: { value: 6, unit: "mm" }
					};
				}

				page.marks = declarations.marks;
			}

			if (declarations.margin) {
				page.margin = declarations.margin;
			}

			if (declarations.marks) {
				page.marks = declarations.marks;
			}

			if (needsMerge) {
				page.block.children.appendList(node.block.children);
			} else {
				page.block = node.block;
			}

			// Remove the rule
			list.remove(item);
		}

		/* Handled in breaks */
		/*
		afterParsed(parsed) {
			for (let b in this.named) {
				// Find elements
				let elements = parsed.querySelectorAll(b);
				// Add break data
				for (var i = 0; i < elements.length; i++) {
					elements[i].setAttribute("data-page", this.named[b]);
				}
			}
		}
		*/

		afterTreeWalk(ast, sheet) {
			this.addPageClasses(this.pages, ast, sheet);

			if ("*" in this.pages) {
				let width = this.pages["*"].width;
				let height = this.pages["*"].height;
				let format = this.pages["*"].format;
				let orientation = this.pages["*"].orientation;
				let bleed = this.pages["*"].bleed;
				let marks = this.pages["*"].marks;


				if ((width && height) &&
						(this.width !== width || this.height !== height)) {
					this.width = width;
					this.height = height;
					this.format = format;
					this.orientation = orientation;

					this.addRootVars(ast, width, height, orientation, bleed, marks);
					this.addRootPage(ast, this.pages["*"].size, bleed);

					this.emit("size", { width, height, orientation, format, bleed });
					this.emit("atpages", this.pages);
				}

			}
		}

		getTypeSelector(ast) {
			// Find page name
			let name;

			lib.walk(ast, {
				visit: "TypeSelector",
				enter: (node, item, list) => {
					name = node.name;
				}
			});

			return name;
		}

		getPsuedoSelector(ast) {
			// Find if it has :left & :right & :black & :first
			let name;
			lib.walk(ast, {
				visit: "PseudoClassSelector",
				enter: (node, item, list) => {
					if (node.name !== "nth") {
						name = node.name;
					}
				}
			});

			return name;
		}

		getNthSelector(ast) {
			// Find if it has :nth
			let nth;
			lib.walk(ast, {
				visit: "PseudoClassSelector",
				enter: (node, item, list) => {
					if (node.name === "nth" && node.children) {
						let raw = node.children.first();
						nth = raw.value;
					}
				}
			});

			return nth;
		}

		replaceMarginalia(ast) {
			let parsed = {};

			lib.walk(ast.block, {
				visit: "Atrule",
				enter: (node, item, list) => {
					let name = node.name;
					if (name === "top") {
						name = "top-center";
					}
					if (name === "right") {
						name = "right-middle";
					}
					if (name === "left") {
						name = "left-middle";
					}
					if (name === "bottom") {
						name = "bottom-center";
					}
					parsed[name] = node.block;
					list.remove(item);
				}
			});

			return parsed;
		}

		replaceDeclartations(ast) {
			let parsed = {};

			lib.walk(ast.block, {
				visit: "Declaration",
				enter: (declaration, dItem, dList) => {
					let prop = lib.property(declaration.property).name;
					let value = declaration.value;

					if (prop === "marks") {
						parsed.marks = [];
						lib.walk(declaration, {
							visit: "Identifier",
							enter: (ident) => {
								parsed.marks.push(ident.name);
							}
						});
						dList.remove(dItem);
					} else if (prop === "margin") {
						parsed.margin = this.getMargins(declaration);
						dList.remove(dItem);
					} else if (prop.indexOf("margin-") === 0) {
						let m = prop.substring("margin-".length);
						if (!parsed.margin) {
							parsed.margin = {
								top: {},
								right: {},
								left: {},
								bottom: {}
							};
						}
						parsed.margin[m] = declaration.value.children.first();
						dList.remove(dItem);
					} else if (prop === "size") {
						parsed.size = this.getSize(declaration);
						dList.remove(dItem);
					} else if (prop === "bleed") {
						parsed.bleed = [];

						lib.walk(declaration, {
							enter: (subNode) => {
								switch (subNode.type) {
									case "String": // bleed: "auto"
										if (subNode.value.indexOf("auto") > -1) {
											parsed.bleed.push("auto");
										}
										break;
									case "Dimension": // bleed: 1in 2in, bleed: 20px ect.
										parsed.bleed.push({
											value: subNode.value,
											unit: subNode.unit
										});
										break;
									case "Number":
										parsed.bleed.push({
											value: subNode.value,
											unit: "px"
										});
										break;
									default:
										// ignore
								}

							}
						});

						dList.remove(dItem);
					}

				}
			});

			return parsed;
		}

		getSize(declaration) {
			let width, height, orientation, format;

			// Get size: Xmm Ymm
			lib.walk(declaration, {
				visit: "Dimension",
				enter: (node, item, list) => {
					let {value, unit} = node;
					if (typeof width === "undefined") {
						width = { value, unit };
					} else if (typeof height === "undefined") {
						height = { value, unit };
					}
				}
			});

			// Get size: "A4"
			lib.walk(declaration, {
				visit: "String",
				enter: (node, item, list) => {
					let name = node.value.replace(/["|']/g, "");
					let s = pageSizes[name];
					if (s) {
						width = s.width;
						height = s.height;
					}
				}
			});

			// Get Format or Landscape or Portrait
			lib.walk(declaration, {
				visit: "Identifier",
				enter: (node, item, list) => {
					let name = node.name;
					if (name === "landscape" || name === "portrait") {
						orientation = node.name;
					} else if (name !== "auto") {
						let s = pageSizes[name];
						if (s) {
							width = s.width;
							height = s.height;
						}
						format = name;
					}
				}
			});

			return {
				width,
				height,
				orientation,
				format
			};
		}

		getMargins(declaration) {
			let margins = [];
			let margin = {
				top: {},
				right: {},
				left: {},
				bottom: {}
			};

			lib.walk(declaration, {
				visit: "Dimension",
				enter: (node, item, list) => {
					margins.push(node);
				}
			});

			if (margins.length === 1) {
				for (let m in margin) {
					margin[m] = margins[0];
				}
			} else if (margins.length === 2) {
				margin.top = margins[0];
				margin.right = margins[1];
				margin.bottom = margins[0];
				margin.left = margins[1];
			} else if (margins.length === 3) {
				margin.top = margins[0];
				margin.right = margins[1];
				margin.bottom = margins[2];
				margin.left = margins[1];
			} else if (margins.length === 4) {
				margin.top = margins[0];
				margin.right = margins[1];
				margin.bottom = margins[2];
				margin.left = margins[3];
			}

			return margin;
		}

		addPageClasses(pages, ast, sheet) {
			// First add * page
			if ("*" in pages && !pages["*"].added) {
				let p = this.createPage(pages["*"], ast.children, sheet);
				sheet.insertRule(p);
				pages["*"].added = true;
			}
			// Add :left & :right
			if (":left" in pages && !pages[":left"].added) {
				let left = this.createPage(pages[":left"], ast.children, sheet);
				sheet.insertRule(left);
				pages[":left"].added = true;
			}
			if (":right" in pages && !pages[":right"].added) {
				let right = this.createPage(pages[":right"], ast.children, sheet);
				sheet.insertRule(right);
				pages[":right"].added = true;
			}
			// Add :first & :blank
			if (":first" in pages && !pages[":first"].first) {
				let first = this.createPage(pages[":first"], ast.children, sheet);
				sheet.insertRule(first);
				pages[":first"].added = true;
			}
			if (":blank" in pages && !pages[":blank"].added) {
				let blank = this.createPage(pages[":blank"], ast.children, sheet);
				sheet.insertRule(blank);
				pages[":blank"].added = true;
			}
			// Add nth pages
			for (let pg in pages) {
				if (pages[pg].nth && !pages[pg].added) {
					let nth = this.createPage(pages[pg], ast.children, sheet);
					sheet.insertRule(nth);
					pages[pg].added = true;
				}
			}

			// Add named pages
			for (let pg in pages) {
				if (pages[pg].name && !pages[pg].added) {
					let named = this.createPage(pages[pg], ast.children, sheet);
					sheet.insertRule(named);
					pages[pg].added = true;
				}
			}

		}

		createPage(page, ruleList, sheet) {

			let selectors = this.selectorsForPage(page);
			let children = page.block.children.copy();
			let block = {
				type: "Block",
				loc: 0,
				children: children
			};
			let rule = this.createRule(selectors, block);

			this.addMarginVars(page.margin, children, children.first());

			if (page.width) {
				this.addDimensions(page.width, page.height, page.orientation, children, children.first());
			}

			if (page.marginalia) {
				this.addMarginaliaStyles(page, ruleList, rule, sheet);
				this.addMarginaliaContent(page, ruleList, rule, sheet);
			}

			return rule;
		}

		addMarginVars(margin, list, item) {
			// variables for margins
			for (let m in margin) {
				if (typeof margin[m].value !== "undefined") {
					let value = margin[m].value + (margin[m].unit || "");
					let mVar = list.createItem({
						type: "Declaration",
						property: "--pagedjs-margin-" + m,
						value: {
							type: "Raw",
							value: value
						}
					});
					list.append(mVar, item);
				}
			}
		}

		addDimensions(width, height, orientation, list, item) {
			let widthString, heightString;

			widthString = CSSValueToString(width);
			heightString = CSSValueToString(height);

			if (orientation && orientation !== "portrait") {
				// reverse for orientation
				[widthString, heightString] = [heightString, widthString];
			}

			// width variable
			let wVar = this.createVariable("--pagedjs-pagebox-width", widthString);
			list.appendData(wVar);

			// height variable
			let hVar = this.createVariable("--pagedjs-pagebox-height", heightString);
			list.appendData(hVar);

			// let w = this.createDimension("width", width);
			// let h = this.createDimension("height", height);
			// list.appendData(w);
			// list.appendData(h);
		}

		addMarginaliaStyles(page, list, item, sheet) {
			for (let loc in page.marginalia) {
				let block = lib.clone(page.marginalia[loc]);
				let hasContent = false;

				if(block.children.isEmpty()) {
					continue;
				}

				lib.walk(block, {
					visit: "Declaration",
					enter: (node, item, list) => {
						if (node.property === "content") {
							if (node.value.children && node.value.children.first().name === "none") {
								hasContent = false;
							} else {
								hasContent = true;
							}
							list.remove(item);
						}
						if (node.property === "vertical-align") {
							lib.walk(node, {
								visit: "Identifier",
								enter: (identNode, identItem, identlist) => {
									let name = identNode.name;
									if (name === "top") {
										identNode.name = "flex-start";
									} else if (name === "middle") {
										identNode.name = "center";
									} else if (name === "bottom") {
										identNode.name = "flex-end";
									}
								}
							});
							node.property = "align-items";
						}

						if (node.property === "width" &&
							(loc === "top-left" ||
							 loc === "top-center" ||
							 loc === "top-right" ||
							 loc === "bottom-left" ||
							 loc === "bottom-center" ||
							 loc === "bottom-right")) {
							let c = lib.clone(node);
							c.property = "max-width";
							list.appendData(c);
						}

						if (node.property === "height" &&
							(loc === "left-top" ||
							 loc === "left-middle" ||
							 loc === "left-bottom" ||
							 loc === "right-top" ||
							 loc === "right-middle" ||
							 loc === "right-bottom")) {
							let c = lib.clone(node);
							c.property = "max-height";
							list.appendData(c);
						}
					}
				});

				let marginSelectors = this.selectorsForPageMargin(page, loc);
				let marginRule = this.createRule(marginSelectors, block);

				list.appendData(marginRule);

				let sel = lib.generate({
					type: "Selector",
					children: marginSelectors
				});

				this.marginalia[sel] = {
					page: page,
					selector: sel,
					block: page.marginalia[loc],
					hasContent: hasContent
				};

			}
		}

		addMarginaliaContent(page, list, item, sheet) {
			let displayNone;
			// Just content
			for (let loc in page.marginalia) {
				let content = lib.clone(page.marginalia[loc]);
				lib.walk(content, {
					visit: "Declaration",
					enter: (node, item, list) => {
						if (node.property !== "content") {
							list.remove(item);
						}

						if (node.value.children && node.value.children.first().name === "none") {
							displayNone = true;
						}
					}
				});

				if(content.children.isEmpty()) {
					continue;
				}

				let displaySelectors = this.selectorsForPageMargin(page, loc);
				let displayDeclaration;

				displaySelectors.insertData({
					type: "Combinator",
					name: ">"
				});

				displaySelectors.insertData({
					type: "ClassSelector",
					name: "pagedjs_margin-content"
				});

				displaySelectors.insertData({
					type: "Combinator",
					name: ">"
				});

				displaySelectors.insertData({
					type: "TypeSelector",
					name: "*"
				});

				if (displayNone) {
					displayDeclaration = this.createDeclaration("display", "none");
				} else {
					displayDeclaration = this.createDeclaration("display", "block");
				}

				let displayRule = this.createRule(displaySelectors, [displayDeclaration]);
				sheet.insertRule(displayRule);

				// insert content rule
				let contentSelectors = this.selectorsForPageMargin(page, loc);

				contentSelectors.insertData({
					type: "Combinator",
					name: ">"
				});

				contentSelectors.insertData({
					type: "ClassSelector",
					name: "pagedjs_margin-content"
				});

				contentSelectors.insertData({
					type: "PseudoElementSelector",
					name: "after",
					children: null
				});

				let contentRule = this.createRule(contentSelectors, content);
				sheet.insertRule(contentRule);
			}
		}

		addRootVars(ast, width, height, orientation, bleed, marks) {
			let rules = [];
			let selectors = new lib.List();
			selectors.insertData({
				type: "PseudoClassSelector",
				name: "root",
				children: null
			});

			let widthString, heightString;

			if (!bleed) {
				widthString = CSSValueToString(width);
				heightString = CSSValueToString(height);
			} else {
				widthString = `calc( ${CSSValueToString(width)} + ${CSSValueToString(bleed.left)} + ${CSSValueToString(bleed.right)} )`;
				heightString = `calc( ${CSSValueToString(height)} + ${CSSValueToString(bleed.top)} + ${CSSValueToString(bleed.bottom)} )`;

				let bleedTop = this.createVariable("--pagedjs-bleed-top", CSSValueToString(bleed.top));
				let bleedRight = this.createVariable("--pagedjs-bleed-right", CSSValueToString(bleed.right));
				let bleedBottom = this.createVariable("--pagedjs-bleed-bottom", CSSValueToString(bleed.bottom));
				let bleedLeft = this.createVariable("--pagedjs-bleed-left", CSSValueToString(bleed.left));

				let pageWidthVar = this.createVariable("--pagedjs-width", CSSValueToString(width));
				let pageHeightVar = this.createVariable("--pagedjs-height", CSSValueToString(height));

				rules.push(bleedTop, bleedRight, bleedBottom, bleedLeft, pageWidthVar, pageHeightVar);
			}

			if (marks) {
				marks.forEach((mark) => {
					let markDisplay = this.createVariable("--pagedjs-mark-" + mark + "-display", "block");
					rules.push(markDisplay);
				});
			}

			// orientation variable
			if (orientation) {
				let oVar = this.createVariable("--pagedjs-orientation", orientation);
				rules.push(oVar);

				if (orientation !== "portrait") {
					// reverse for orientation
					[widthString, heightString] = [heightString, widthString];
				}
			}

			let wVar = this.createVariable("--pagedjs-width", widthString);
			let hVar = this.createVariable("--pagedjs-height", heightString);

			rules.push(wVar, hVar);

			let rule = this.createRule(selectors, rules);

			ast.children.appendData(rule);
		}

		/*
		@page {
			size: var(--pagedjs-width) var(--pagedjs-height);
			margin: 0;
			padding: 0;
		}
		*/
		addRootPage(ast, size, bleed) {
			let { width, height, orientation, format } = size;
			let children = new lib.List();
			let dimensions = new lib.List();

			if (bleed) {
				let widthCalculations = new lib.List();
				let heightCalculations = new lib.List();

				// width
				widthCalculations.appendData({
					type: "Dimension",
					unit: width.unit,
					value: width.value
				});

				widthCalculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				widthCalculations.appendData({
					type: "Operator",
					value: "+"
				});

				widthCalculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				widthCalculations.appendData({
					type: "Dimension",
					unit: bleed.left.unit,
					value: bleed.left.value
				});

				widthCalculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				widthCalculations.appendData({
					type: "Operator",
					value: "+"
				});

				widthCalculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				widthCalculations.appendData({
					type: "Dimension",
					unit: bleed.right.unit,
					value: bleed.right.value
				});

				// height
				heightCalculations.appendData({
					type: "Dimension",
					unit: height.unit,
					value: height.value
				});

				heightCalculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				heightCalculations.appendData({
					type: "Operator",
					value: "+"
				});

				heightCalculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				heightCalculations.appendData({
					type: "Dimension",
					unit: bleed.top.unit,
					value: bleed.top.value
				});

				heightCalculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				heightCalculations.appendData({
					type: "Operator",
					value: "+"
				});

				heightCalculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				heightCalculations.appendData({
					type: "Dimension",
					unit: bleed.bottom.unit,
					value: bleed.bottom.value
				});

				dimensions.appendData({
					type: "Function",
					name: "calc",
					children: widthCalculations
				});

				dimensions.appendData({
					type: "WhiteSpace",
					value: " "
				});

				dimensions.appendData({
					type: "Function",
					name: "calc",
					children: heightCalculations
				});

			} else if (format) {
				dimensions.appendData({
					type: "Identifier",
					name: format
				});

				if (orientation) {
					dimensions.appendData({
						type: "WhiteSpace",
						value: " "
					});

					dimensions.appendData({
						type: "Identifier",
						name: orientation
					});
				}
			} else {
				dimensions.appendData({
					type: "Dimension",
					unit: width.unit,
					value: width.value
				});

				dimensions.appendData({
					type: "WhiteSpace",
					value: " "
				});

				dimensions.appendData({
					type: "Dimension",
					unit: height.unit,
					value: height.value
				});
			}

			children.appendData({
				type: "Declaration",
				property: "size",
				loc: null,
				value: {
					type: "Value",
					children: dimensions
				}
			});

			children.appendData({
				type: "Declaration",
				property: "margin",
				loc: null,
				value: {
					type: "Value",
					children: [{
						type: "Dimension",
						unit: "px",
						value: 0
					}]
				}
			});

			children.appendData({
				type: "Declaration",
				property: "padding",
				loc: null,
				value: {
					type: "Value",
					children: [{
						type: "Dimension",
						unit: "px",
						value: 0
					}]
				}
			});


			let rule = ast.children.createItem({
				type: "Atrule",
				prelude: null,
				name: "page",
				block: {
					type: "Block",
					loc: null,
					children: children
				}
			});

			ast.children.append(rule);
		}

		getNth(nth) {
			let n = nth.indexOf("n");
			let plus = nth.indexOf("+");
			let splitN = nth.split("n");
			let splitP = nth.split("+");
			let a = null;
			let b = null;
			if (n > -1) {
				a = splitN[0];
				if (plus > -1) {
					b = splitP[1];
				}
			} else {
				b = nth;
			}

			return {
				type: "Nth",
				loc: null,
				selector: null,
				nth: {
					type: "AnPlusB",
					loc: null,
					a: a,
					b: b
				}
			};
		}

		addPageAttributes(page, start, pages) {
			let named = start.dataset.page;

			if (named) {
				page.name = named;
				page.element.classList.add("pagedjs_named_page");
				page.element.classList.add("pagedjs_" + named + "_page");

				if (!start.dataset.splitFrom) {
					page.element.classList.add("pagedjs_" + named + "_first_page");
				}
			}
		}

		getStartElement(content, breakToken) {
			let node = breakToken && breakToken.node;

			if (!content && !breakToken) {
				return;
			}

			// No break
			if (!node) {
				return content.children[0];
			}

			// Top level element
			if (node.nodeType === 1 && node.parentNode.nodeType === 11) {
				return node;
			}

			// Named page
			if (node.nodeType === 1 && node.dataset.page) {
				return node;
			}

			// Get top level Named parent
			let fragment = rebuildAncestors(node);
			let pages = fragment.querySelectorAll("[data-page]");

			if (pages.length) {
				return pages[pages.length - 1];
			} else {
				return fragment.children[0];
			}
		}

		beforePageLayout(page, contents, breakToken, chunker) {
			let start = this.getStartElement(contents, breakToken);
			if (start) {
				this.addPageAttributes(page, start, chunker.pages);
			}
		}

		afterPageLayout(fragment, page, breakToken, chunker) {
			for (let m in this.marginalia) {
				let margin = this.marginalia[m];
				let sels = m.split(" ");

				let content;
				if (page.element.matches(sels[0]) && margin.hasContent) {
					content = page.element.querySelector(sels[1]);
					content.classList.add("hasContent");
				}
			}

			// check center
			["top", "bottom"].forEach((loc) => {
				let marginGroup = page.element.querySelector(".pagedjs_margin-" + loc);
				let center = page.element.querySelector(".pagedjs_margin-" + loc + "-center");
				let left = page.element.querySelector(".pagedjs_margin-" + loc + "-left");
				let right = page.element.querySelector(".pagedjs_margin-" + loc + "-right");

				let centerContent = center.classList.contains("hasContent");
				let leftContent = left.classList.contains("hasContent");
				let rightContent = right.classList.contains("hasContent");
				let centerWidth, leftWidth, rightWidth;

				if (leftContent) {
					leftWidth = window.getComputedStyle(left)["max-width"];
				}

				if (rightContent) {
					rightWidth = window.getComputedStyle(right)["max-width"];
				}


				if (centerContent) {
					centerWidth = window.getComputedStyle(center)["max-width"];

					if(centerWidth === "none" || centerWidth === "auto") {
						if(!leftContent && !rightContent){
							marginGroup.style["grid-template-columns"] = "0 1fr 0";
						}else if(leftContent){
							if(!rightContent){
								if(leftWidth !== "none" && leftWidth !== "auto"){
									marginGroup.style["grid-template-columns"] = leftWidth + " 1fr " + leftWidth;
								}else{
									marginGroup.style["grid-template-columns"] = "auto auto 1fr";
									left.style["white-space"] = "nowrap";
									center.style["white-space"] = "nowrap";
									let leftOuterWidth = left.offsetWidth;
									let centerOuterWidth = center.offsetWidth;
									let outerwidths = leftOuterWidth + centerOuterWidth;
									let newcenterWidth = centerOuterWidth * 100 / outerwidths;
									marginGroup.style["grid-template-columns"] = "minmax(16.66%, 1fr) minmax(33%, " + newcenterWidth + "%) minmax(16.66%, 1fr)";
									left.style["white-space"] = "normal";
									center.style["white-space"] = "normal";
								}
							}else{
								if(leftWidth !== "none" && leftWidth !== "auto"){
									if(rightWidth !== "none" && rightWidth !== "auto"){
										marginGroup.style["grid-template-columns"] = leftWidth + " 1fr " + rightWidth;
									}else{
										marginGroup.style["grid-template-columns"] = leftWidth + " 1fr " + leftWidth;
									}
								}else{
									if(rightWidth !== "none" && rightWidth !== "auto"){
										marginGroup.style["grid-template-columns"] = rightWidth + " 1fr " + rightWidth;
									}else{
										marginGroup.style["grid-template-columns"] = "auto auto 1fr";
										left.style["white-space"] = "nowrap";
										center.style["white-space"] = "nowrap";
										right.style["white-space"] = "nowrap";
										let leftOuterWidth = left.offsetWidth;
										let centerOuterWidth = center.offsetWidth;
										let rightOuterWidth = right.offsetWidth;
										let outerwidths = leftOuterWidth + centerOuterWidth + rightOuterWidth;
										let newcenterWidth = centerOuterWidth * 100 / outerwidths;
										if(newcenterWidth > 40){
											marginGroup.style["grid-template-columns"] = "minmax(16.66%, 1fr) minmax(33%, " + newcenterWidth + "%) minmax(16.66%, 1fr)";
										}else{
											marginGroup.style["grid-template-columns"] = "repeat(3, 1fr)";
										}
										left.style["white-space"] = "normal";
										center.style["white-space"] = "normal";
										right.style["white-space"] = "normal";
									}
								}
							}
						}else{
							if(rightWidth !== "none" && rightWidth !== "auto"){
								marginGroup.style["grid-template-columns"] = rightWidth + " 1fr " + rightWidth;
							}else{
								marginGroup.style["grid-template-columns"] = "auto auto 1fr";
								right.style["white-space"] = "nowrap";
								center.style["white-space"] = "nowrap";
								let rightOuterWidth = right.offsetWidth;
								let centerOuterWidth = center.offsetWidth;
								let outerwidths = rightOuterWidth + centerOuterWidth;
								let newcenterWidth = centerOuterWidth * 100 / outerwidths;
								marginGroup.style["grid-template-columns"] = "minmax(16.66%, 1fr) minmax(33%, " + newcenterWidth + "%) minmax(16.66%, 1fr)";
								right.style["white-space"] = "normal";
								center.style["white-space"] = "normal";
							}
						}
					}else if(centerWidth !== "none" && centerWidth !== "auto"){
						if(leftContent && leftWidth !== "none" && leftWidth !== "auto"){
							marginGroup.style["grid-template-columns"] = leftWidth + " " + centerWidth + " 1fr";
						}else if(rightContent && rightWidth !== "none" && rightWidth !== "auto"){
							marginGroup.style["grid-template-columns"] = "1fr " + centerWidth + " " + rightWidth;
						}else{
							marginGroup.style["grid-template-columns"] = "1fr " + centerWidth + " 1fr";
						}

					}

				}else{
					if(leftContent){
						if(!rightContent){
							marginGroup.style["grid-template-columns"] = "1fr 0 0";
						}else{
							if(leftWidth !== "none" && leftWidth !== "auto"){
								if(rightWidth !== "none" && rightWidth !== "auto"){
									marginGroup.style["grid-template-columns"] = leftWidth + " 1fr " + rightWidth;
								}else{
									marginGroup.style["grid-template-columns"] = leftWidth + " 0 1fr";
								}
							}else{
								if(rightWidth !== "none" && rightWidth !== "auto"){
									marginGroup.style["grid-template-columns"] = "1fr 0 " + rightWidth;
								}else{
									marginGroup.style["grid-template-columns"] = "auto 1fr auto";
									left.style["white-space"] = "nowrap";
									right.style["white-space"] = "nowrap";
									let leftOuterWidth = left.offsetWidth;
									let rightOuterWidth = right.offsetWidth;
									let outerwidths = leftOuterWidth + rightOuterWidth;
									let newLeftWidth = leftOuterWidth * 100 / outerwidths;
									marginGroup.style["grid-template-columns"] = "minmax(16.66%, " + newLeftWidth  + "%) 0 1fr";
									left.style["white-space"] = "normal";
									right.style["white-space"] = "normal";
								}
							}
						}
					}else{
						if(rightWidth !== "none" && rightWidth !== "auto"){
							marginGroup.style["grid-template-columns"] = "1fr 0 " + rightWidth;
						}else{
							marginGroup.style["grid-template-columns"] = "0 0 1fr";
						}
					}
				}
			});

			// check middle
			["left", "right"].forEach((loc) => {
				let middle = page.element.querySelector(".pagedjs_margin-" + loc + "-middle.hasContent");
				let marginGroup = page.element.querySelector(".pagedjs_margin-" + loc);
				let top = page.element.querySelector(".pagedjs_margin-" + loc + "-top");
				let bottom = page.element.querySelector(".pagedjs_margin-" + loc + "-bottom");
				let topContent = top.classList.contains("hasContent");
				let bottomContent = bottom.classList.contains("hasContent");
				let middleHeight, topHeight, bottomHeight;

				if (topContent) {
					topHeight = window.getComputedStyle(top)["max-height"];
				}

				if (bottomContent) {
					bottomHeight = window.getComputedStyle(bottom)["max-height"];
				}

				if (middle) {
					middleHeight = window.getComputedStyle(middle)["max-height"];

					if(middleHeight === "none" || middleHeight === "auto") {
						if(!topContent && !bottomContent){
							marginGroup.style["grid-template-rows"] = "0 1fr 0";
						}else if(topContent){
							if(!bottomContent){
								if(topHeight !== "none" && topHeight !== "auto"){
									marginGroup.style["grid-template-rows"] = topHeight + " calc(100% - " + topHeight + "*2) " + topHeight;
								}
							}else{
								if(topHeight !== "none" && topHeight !== "auto"){
									if(bottomHeight !== "none" && bottomHeight !== "auto"){
										marginGroup.style["grid-template-rows"] = topHeight + " calc(100% - " + topHeight + " - " + bottomHeight + ") " + bottomHeight;
									}else{
										marginGroup.style["grid-template-rows"] = topHeight + " calc(100% - " + topHeight + "*2) " + topHeight;
									}
								}else{
									if(bottomHeight !== "none" && bottomHeight !== "auto"){
										marginGroup.style["grid-template-rows"] = bottomHeight + " calc(100% - " + bottomHeight + "*2) " + bottomHeight;
									}
								}
							}
						}else{
							if(bottomHeight !== "none" && bottomHeight !== "auto"){
								marginGroup.style["grid-template-rows"] = bottomHeight + " calc(100% - " + bottomHeight + "*2) " + bottomHeight;
							}
						}
					}else{
						if(topContent && topHeight !== "none" && topHeight !== "auto"){
							marginGroup.style["grid-template-rows"] = topHeight +" " + middleHeight + " calc(100% - (" + topHeight + " + " + middleHeight + "))";
						}else if(bottomContent && bottomHeight !== "none" && bottomHeight !== "auto"){
							marginGroup.style["grid-template-rows"] = "1fr " + middleHeight + " " + bottomHeight;
						}else{
							marginGroup.style["grid-template-rows"] = "calc((100% - " + middleHeight + ")/2) " + middleHeight + " calc((100% - " + middleHeight + ")/2)";
						}

					}

				}else{
					if(topContent){
						if(!bottomContent){
							marginGroup.style["grid-template-rows"] = "1fr 0 0";
						}else{
							if(topHeight !== "none" && topHeight !== "auto"){
								if(bottomHeight !== "none" && bottomHeight !== "auto"){
									marginGroup.style["grid-template-rows"] = topHeight + " 1fr " + bottomHeight;
								}else{
									marginGroup.style["grid-template-rows"] = topHeight + " 0 1fr";
								}
							}else{
								if(bottomHeight !== "none" && bottomHeight !== "auto"){
									marginGroup.style["grid-template-rows"] = "1fr 0 " + bottomHeight;
								}else{
									marginGroup.style["grid-template-rows"] = "1fr 0 1fr";
								}
							}
						}
					}else{
						if(bottomHeight !== "none" && bottomHeight !== "auto"){
							marginGroup.style["grid-template-rows"] = "1fr 0 " + bottomHeight;
						}else{
							marginGroup.style["grid-template-rows"] = "0 0 1fr";
						}
					}
				}



			});

		}

		// CSS Tree Helpers

		selectorsForPage(page) {
			let nthlist;
			let nth;

			let selectors = new lib.List();

			selectors.insertData({
				type: "ClassSelector",
				name: "pagedjs_page"
			});

			// Named page
			if (page.name) {
				selectors.insertData({
					type: "ClassSelector",
					name: "pagedjs_named_page"
				});

				selectors.insertData({
					type: "ClassSelector",
					name: "pagedjs_" + page.name + "_page"
				});
			}

			// PsuedoSelector
			if (page.psuedo && !(page.name && page.psuedo === "first")) {
				selectors.insertData({
					type: "ClassSelector",
					name: "pagedjs_" + page.psuedo + "_page"
				});
			}

			if (page.name && page.psuedo === "first") {
				selectors.insertData({
					type: "ClassSelector",
					name: "pagedjs_" + page.name + "_" + page.psuedo + "_page"
				});
			}

			// Nth
			if (page.nth) {
				nthlist = new lib.List();
				nth = this.getNth(page.nth);

				nthlist.insertData(nth);

				selectors.insertData({
					type: "PseudoClassSelector",
					name: "nth-of-type",
					children: nthlist
				});
			}

			return selectors;
		}

		selectorsForPageMargin(page, margin) {
			let selectors = this.selectorsForPage(page);

			selectors.insertData({
				type: "Combinator",
				name: " "
			});

			selectors.insertData({
				type: "ClassSelector",
				name: "pagedjs_margin-" + margin
			});

			return selectors;
		}

		createDeclaration(property, value, important) {
			let children = new lib.List();

			children.insertData({
				type: "Identifier",
				loc: null,
				name: value
			});

			return {
				type: "Declaration",
				loc: null,
				important: important,
				property: property,
				value: {
					type: "Value",
					loc: null,
					children: children
				}
			};
		}

		createVariable(property, value) {
			return {
				type: "Declaration",
				loc: null,
				property: property,
				value: {
					type: "Raw",
					value: value
				}
			};
		}

		createCalculatedDimension(property, items, important, operator="+") {
			let children = new lib.List();
			let calculations = new lib.List();

			items.forEach((item, index) => {
				calculations.appendData({
					type: "Dimension",
					unit: item.unit,
					value: item.value
				});

				calculations.appendData({
					type: "WhiteSpace",
					value: " "
				});

				if (index + 1 < items.length) {
					calculations.appendData({
						type: "Operator",
						value: operator
					});

					calculations.appendData({
						type: "WhiteSpace",
						value: " "
					});
				}
			});

			children.insertData({
				type: "Function",
				loc: null,
				name: "calc",
				children: calculations
			});

			return {
				type: "Declaration",
				loc: null,
				important: important,
				property: property,
				value: {
					type: "Value",
					loc: null,
					children: children
				}
			};
		}

		createDimension(property, cssValue, important) {
			let children = new lib.List();

			children.insertData({
				type: "Dimension",
				loc: null,
				value: cssValue.value,
				unit: cssValue.unit
			});

			return {
				type: "Declaration",
				loc: null,
				important: important,
				property: property,
				value: {
					type: "Value",
					loc: null,
					children: children
				}
			};
		}

		createBlock(declarations) {
			let block = new lib.List();

			declarations.forEach((declaration) => {
				block.insertData(declaration);
			});

			return {
				type: "Block",
				loc: null,
				children: block
			};
		}

		createRule(selectors, block) {
			let selectorList = new lib.List();
			selectorList.insertData({
				type: "Selector",
				children: selectors
			});

			if (Array.isArray(block)) {
				block = this.createBlock(block);
			}

			return {
				type: "Rule",
				prelude: {
					type: "SelectorList",
					children: selectorList
				},
				block: block
			};
		}

	}

	class Breaks extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);

			this.breaks = {};
		}

		onDeclaration(declaration, dItem, dList, rule) {
			let property = declaration.property;

			if (property === "page") {
				let children = declaration.value.children.first();
				let value = children.name;
				let selector = lib.generate(rule.ruleNode.prelude);
				let name = value;

				let breaker = {
					property: property,
					value: value,
					selector: selector,
					name: name
				};

				selector.split(",").forEach((s) => {
					if (!this.breaks[s]) {
						this.breaks[s] = [breaker];
					} else {
						this.breaks[s].push(breaker);
					}
				});

				dList.remove(dItem);
			}

			if (property === "break-before" ||
					property === "break-after" ||
					property === "page-break-before" ||
					property === "page-break-after"
			) {
				let child = declaration.value.children.first();
				let value = child.name;
				let selector = lib.generate(rule.ruleNode.prelude);

				if (property === "page-break-before") {
					property = "break-before";
				} else if (property === "page-break-after") {
					property = "break-after";
				}

				let breaker = {
					property: property,
					value: value,
					selector: selector
				};

				selector.split(",").forEach((s) => {
					if (!this.breaks[s]) {
						this.breaks[s] = [breaker];
					} else {
						this.breaks[s].push(breaker);
					}
				});

				// Remove from CSS -- handle right / left in module
				dList.remove(dItem);
			}
		}

		afterParsed(parsed) {
			this.processBreaks(parsed, this.breaks);
		}

		processBreaks(parsed, breaks) {
			for (let b in breaks) {
				// Find elements
				let elements = parsed.querySelectorAll(b);
				// Add break data
				for (var i = 0; i < elements.length; i++) {
					for (let prop of breaks[b]) {

						if (prop.property === "break-after") {
							let nodeAfter = elementAfter(elements[i], parsed);

							elements[i].setAttribute("data-break-after", prop.value);

							if (nodeAfter) {
								nodeAfter.setAttribute("data-previous-break-after", prop.value);
							}
						} else if (prop.property === "page") {
							elements[i].setAttribute("data-page", prop.value);

							let nodeAfter = elementAfter(elements[i], parsed);

							if (nodeAfter) {
								nodeAfter.setAttribute("data-after-page", prop.value);
							}
						} else {
							elements[i].setAttribute("data-" + prop.property, prop.value);
						}
					}
				}
			}
		}

		mergeBreaks(pageBreaks, newBreaks) {
			for (let b in newBreaks) {
				if (b in pageBreaks) {
					pageBreaks[b] = pageBreaks[b].concat(newBreaks[b]);
				} else {
					pageBreaks[b] = newBreaks[b];
				}
			}
			return pageBreaks;
		}

		addBreakAttributes(pageElement, page) {
			let before = pageElement.querySelector("[data-break-before]");
			let after = pageElement.querySelector("[data-break-after]");
			let previousBreakAfter = pageElement.querySelector("[data-previous-break-after]");

			if (before) {
				if (before.dataset.splitFrom) {
					page.splitFrom = before.dataset.splitFrom;
					pageElement.setAttribute("data-split-from", before.dataset.splitFrom);
				} else if (before.dataset.breakBefore && before.dataset.breakBefore !== "avoid") {
					page.breakBefore = before.dataset.breakBefore;
					pageElement.setAttribute("data-break-before", before.dataset.breakBefore);
				}
			}

			if (after && after.dataset) {
				if (after.dataset.splitTo) {
					page.splitTo = after.dataset.splitTo;
					pageElement.setAttribute("data-split-to", after.dataset.splitTo);
				} else if (after.dataset.breakAfter && after.dataset.breakAfter !== "avoid") {
					page.breakAfter = after.dataset.breakAfter;
					pageElement.setAttribute("data-break-after", after.dataset.breakAfter);
				}
			}

			if (previousBreakAfter && previousBreakAfter.dataset) {
				if (previousBreakAfter.dataset.previousBreakAfter && previousBreakAfter.dataset.previousBreakAfter !== "avoid") {
					page.previousBreakAfter = previousBreakAfter.dataset.previousBreakAfter;
				}
			}
		}

		afterPageLayout(pageElement, page) {
			this.addBreakAttributes(pageElement, page);
		}
	}

	class PrintMedia extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);
		}

		onAtMedia(node, item, list) {
			let media = this.getMediaName(node);
			let rules;

			if (media === "print") {
				rules = node.block.children;

				// Remove rules from the @media block
				node.block.children = new lib.List();

				// Append rules to the end of main rules list
				list.appendList(rules);
			}

		}

		getMediaName(node) {
			let media = "";

			if (typeof node.prelude === "undefined" ||
					node.prelude.type !== "AtrulePrelude" ) {
				return;
			}

			lib.walk(node.prelude, {
				visit: "Identifier",
				enter: (identNode, iItem, iList) => {
					media = identNode.name;
				}
			});
			return media;
		}


	}

	class Splits extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);
		}

		afterPageLayout(pageElement, page, breakToken, chunker) {
			let splits = Array.from(pageElement.querySelectorAll("[data-split-from]"));
			let pages = pageElement.parentNode;
			let index = Array.prototype.indexOf.call(pages.children, pageElement);
			let prevPage;

			if (index === 0) {
				return;
			}

			prevPage = pages.children[index - 1];

			splits.forEach((split) => {
				let ref = split.dataset.ref;
				let from = prevPage.querySelector("[data-ref='"+ ref +"']:not([data-split-to])");

				if (from) {
					from.dataset.splitTo = ref;

					if (!from.dataset.splitFrom) {
						from.dataset.splitOriginal = true;
					}

					this.handleAlignment(from);
				}
			});
		}

		handleAlignment(node) {
			let styles = window.getComputedStyle(node);
			let align = styles["text-align"];
			let alignLast = styles["text-align-last"];
			if (align === "justify" && alignLast === "auto") {
				node.style["text-align-last"] = "justify";
			}
		}

	}

	class Counters extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);

			this.styleSheet = polisher.styleSheet;
			this.counters = {};
		}

		onDeclaration(declaration, dItem, dList, rule) {
			let property = declaration.property;

			if (property === "counter-increment") {
				let inc = this.handleIncrement(declaration, rule);
				if (inc) {
					dList.remove(dItem);
				}
			} else if (property === "counter-reset") {
				let reset = this.handleReset(declaration, rule);
				if (reset) {
					dList.remove(dItem);
				}
			}
		}

		onContent(funcNode, fItem, fList, declaration, rule) {
			if (funcNode.name === "counter") ;
		}

		afterParsed(parsed) {
			this.processCounters(parsed, this.counters);
		}

		addCounter(name) {
			if (name in this.counters) {
				return this.counters[name];
			}

			this.counters[name] = {
				name: name,
				increments: {},
				resets: {}
			};

			return this.counters[name];
		}

		handleIncrement(declaration, rule) {
			let identifier = declaration.value.children.first();
			let number = declaration.value.children.getSize() > 1
								&& declaration.value.children.last().value;
			let name = identifier && identifier.name;

			if (name === "page" || name.indexOf("target-counter-") === 0) {
				return;
			}

			let selector = lib.generate(rule.ruleNode.prelude);

			let counter;
			if (!(name in this.counters)) {
				counter = this.addCounter(name);
			} else {
				counter = this.counters[name];
			}

			return counter.increments[selector] = {
				selector: selector,
				number: number || 1
			};
		}

		handleReset(declaration, rule) {
			let identifier = declaration.value.children.first();
			let number = declaration.value.children.getSize() > 1
								&& declaration.value.children.last().value;
			let name = identifier && identifier.name;
			let selector = lib.generate(rule.ruleNode.prelude);
			let counter;

			if (!(name in this.counters)) {
				counter = this.addCounter(name);
			} else {
				counter = this.counters[name];
			}

			return counter.resets[selector] = {
				selector: selector,
				number: number || 0
			};
		}

		processCounters(parsed, counters) {
			let counter;
			for (let c in counters) {
				counter = this.counters[c];
				this.processCounterIncrements(parsed, counter);
				this.processCounterResets(parsed, counter);
				this.addCounterValues(parsed, counter);
			}
		}

		processCounterIncrements(parsed, counter) {
			let increment;
			for (let inc in counter.increments) {
				increment = counter.increments[inc];
				// Find elements for increments
				let incrementElements = parsed.querySelectorAll(increment.selector);
				// Add counter data
				for (var i = 0; i < incrementElements.length; i++) {
					incrementElements[i].setAttribute("data-counter-"+ counter.name +"-increment", increment.number);
				}
			}
		}

		processCounterResets(parsed, counter) {
			let reset;
			for (let r in counter.resets) {
				reset = counter.resets[r];
				// Find elements for resets
				let resetElements = parsed.querySelectorAll(reset.selector);
				// Add counter data
				for (var i = 0; i < resetElements.length; i++) {
					resetElements[i].setAttribute("data-counter-"+ counter.name +"-reset", reset.number);
				}
			}
		}

		addCounterValues(parsed, counter) {
			let counterName = counter.name;
			let elements = parsed.querySelectorAll("[data-counter-"+ counterName +"-reset], [data-counter-"+ counterName +"-increment]");

			let count = 0;
			let element;
			let increment, reset;

			for (var i = 0; i < elements.length; i++) {
				element = elements[i];

				if (element.hasAttribute("data-counter-"+ counterName +"-reset")) {
					reset = element.getAttribute("data-counter-"+ counterName +"-reset");
					count = parseInt(reset);
				}

				if (element.hasAttribute("data-counter-"+ counterName +"-increment")) {

					increment = element.getAttribute("data-counter-"+ counterName +"-increment");

					this.styleSheet.insertRule(`[data-ref="${element.dataset.ref}"] { counter-reset: ${counterName} ${count} }`, this.styleSheet.cssRules.length);
					this.styleSheet.insertRule(`[data-ref="${element.dataset.ref}"] { counter-increment: ${counterName} ${increment}}`, this.styleSheet.cssRules.length);

					count += parseInt(increment);

					element.setAttribute("data-counter-"+counterName+"-value", count);
				}

			}
		}

		afterPageLayout(pageElement, page) {
			let pgreset = pageElement.querySelectorAll("[data-counter-page-reset]");
			pgreset.forEach((reset) => {
				let value = reset.datasetCounterPageReset;
				this.styleSheet.insertRule(`[data-page-number="${pageElement.dataset.pageNumber}"] { counter-reset: page ${value} }`, this.styleSheet.cssRules.length);
			});
		}

	}

	class Lists extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);
		}
		afterParsed(content) {
			const orderedLists = content.querySelectorAll("ol");

			for (var list of orderedLists) {
				this.addDataNumbers(list);
			}
		}

		afterPageLayout(pageElement, page, breakToken, chunker) {
			var orderedLists = pageElement.getElementsByTagName("ol");
			for (var list of orderedLists) {
				if (list.hasChildNodes()) {
				list.start = list.firstElementChild.dataset.itemNum;
				}
				else {
					list.parentNode.removeChild(list);
				}
			}
		}

		addDataNumbers(list) {
			let items = list.children;
			for (var i = 0; i < items.length; i++) {
				items[i].setAttribute("data-item-num", i + 1);
			}
		}

	}

	var pagedMediaHandlers = [
		AtPage,
		Breaks,
		PrintMedia,
		Splits,
		Counters,
		Lists
	];

	class RunningHeaders extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);

			this.runningSelectors = {};
			this.elements = {};
		}

		onDeclaration(declaration, dItem, dList, rule) {
			if (declaration.property === "position") {
				let selector = lib.generate(rule.ruleNode.prelude);
				let identifier = declaration.value.children.first().name;

				if (identifier === "running") {
					let value;
					lib.walk(declaration, {
						visit: "Function",
						enter: (node, item, list) => {
							value = node.children.first().name;
						}
					});

					this.runningSelectors[value] = {
						identifier: identifier,
						value: value,
						selector: selector
					};
				}
			}

			if (declaration.property === "content") {

				lib.walk(declaration, {
					visit: "Function",
					enter: (funcNode, fItem, fList) => {

						if (funcNode.name.indexOf("element") > -1) {

							let selector = lib.generate(rule.ruleNode.prelude);

							let func = funcNode.name;

							let value = funcNode.children.first().name;

							let args = [value];

							// we only handle first for now
							let style = "first";

							selector.split(",").forEach((s) => {
								// remove before / after
								s = s.replace(/::after|::before/, "");

								this.elements[s] = {
									func: func,
									args: args,
									value: value,
									style: style,
									selector: s,
									fullSelector: selector
								};
							});
						}

					}
				});
			}
		}

		afterParsed(fragment) {
			for (let name of Object.keys(this.runningSelectors)) {
				let set = this.runningSelectors[name];
				let selected = Array.from(fragment.querySelectorAll(set.selector));

				if (set.identifier === "running") {
					for (let header of selected) {
						header.style.display = "none";
					}
				}

			}
		}

		afterPageLayout(fragment) {
			for (let name of Object.keys(this.runningSelectors)) {
				let set = this.runningSelectors[name];
				let selected = fragment.querySelector(set.selector);
				if (selected) {
					// let cssVar;
					if (set.identifier === "running") {
						// cssVar = selected.textContent.replace(/\\([\s\S])|(["|'])/g,"\\$1$2");
						// this.styleSheet.insertRule(`:root { --string-${name}: "${cssVar}"; }`, this.styleSheet.cssRules.length);
						// fragment.style.setProperty(`--string-${name}`, `"${cssVar}"`);
						set.first = selected;
					} else {
						console.warn(set.value + "needs css replacement");
					}
				}
			}

			// move elements
			if (!this.orderedSelectors) {
				this.orderedSelectors = this.orderSelectors(this.elements);
			}

			for (let selector of this.orderedSelectors) {
				if (selector) {

					let el = this.elements[selector];
					let selected = fragment.querySelector(selector);
					if (selected) {
						let running = this.runningSelectors[el.args[0]];
						if (running && running.first) {
							selected.innerHTML = ""; // Clear node
							// selected.classList.add("pagedjs_clear-after"); // Clear ::after
							let clone = running.first.cloneNode(true);
							clone.style.display = null;
							selected.appendChild(clone);
						}
					}
				}
			}
		}

		/**
		* Assign a weight to @page selector classes
		* 1) page
		* 2) left & right
		* 3) blank
		* 4) first & nth
		* 5) named page
		* 6) named left & right
		* 7) named first & nth
		* @param {string} [s] selector string
		* @return {int} weight
		*/
		pageWeight(s) {
			let weight = 1;
			let selector = s.split(" ");
			let parts = selector.length && selector[0].split(".");

			parts.shift(); // remove empty first part

			switch (parts.length) {
				case 4:
					if (parts[3] === "pagedjs_first_page") {
						weight = 7;
					} else if (parts[3] === "pagedjs_left_page" || parts[3] === "pagedjs_right_page") {
						weight = 6;
					}
					break;
				case 3:
					if (parts[1] === "pagedjs_named_page") {
						if (parts[2].indexOf(":nth-of-type") > -1) {
							weight = 7;
						} else {
							weight = 5;
						}
					}
					break;
				case 2:
					if (parts[1] === "pagedjs_first_page") {
						weight = 4;
					} else if (parts[1] === "pagedjs_blank_page") {
						weight = 3;
					} else if (parts[1] === "pagedjs_left_page" || parts[1] === "pagedjs_right_page") {
						weight = 2;
					}
					break;
				default:
					if (parts[0].indexOf(":nth-of-type") > -1) {
						weight = 4;
					} else {
						weight = 1;
					}
			}

			return weight;
		}

		/**
		* Orders the selectors based on weight
		*
		* Does not try to deduplicate base on specifity of the selector
		* Previous matched selector will just be overwritten
		* @param {obj} [obj] selectors object
		* @return {Array} orderedSelectors
		*/
		orderSelectors(obj) {
			let selectors = Object.keys(obj);
			let weighted = {
				1: [],
				2: [],
				3: [],
				4: [],
				5: [],
				6: [],
				7: []
			};

			let orderedSelectors = [];

			for (let s of selectors) {
				let w = this.pageWeight(s);
				weighted[w].unshift(s);
			}

			for (var i = 1; i <= 7; i++) {
				orderedSelectors = orderedSelectors.concat(weighted[i]);
			}

			return orderedSelectors;
		}

		beforeTreeParse(text, sheet) {
			// element(x) is parsed as image element selector, so update element to element-ident
			sheet.text = text.replace(/element[\s]*\(([^|^#)]*)\)/g, "element-ident($1)");
		}
	}

	class StringSets extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);

			this.stringSetSelectors = {};
		}

		onDeclaration(declaration, dItem, dList, rule) {
			if (declaration.property === "string-set") {
				let selector = lib.generate(rule.ruleNode.prelude);

				let identifier = declaration.value.children.first().name;

				let value;
				lib.walk(declaration, {
					visit: "Function",
					enter: (node, item, list) => {
						value = lib.generate(node);
					}
				});

				this.stringSetSelectors[identifier] = {
					identifier: identifier,
					value: value,
					selector: selector
				};
			}
		}

		onContent(funcNode, fItem, fList, declaration, rule) {
			if (funcNode.name === "string") {
				let identifier = funcNode.children && funcNode.children.first().name;
				funcNode.name = "var";
				funcNode.children = new lib.List();

				funcNode.children.append(funcNode.children.createItem({
					type: "Identifier",
					loc: null,
					name: "--pagedjs-string-" + identifier
				}));
			}
		}

		afterPageLayout(fragment) {
			for (let name of Object.keys(this.stringSetSelectors)) {
				let set = this.stringSetSelectors[name];
				let selected = fragment.querySelector(set.selector);
				if (selected) {
					let cssVar;
					if (set.value === "content" || set.value === "content()" || set.value === "content(text)") {
						cssVar = selected.textContent.replace(/\\([\s\S])|(["|'])/g,"\\$1$2");
						// this.styleSheet.insertRule(`:root { --pagedjs-string-${name}: "${cssVar}"; }`, this.styleSheet.cssRules.length);
						// fragment.style.setProperty(`--pagedjs-string-${name}`, `"${cssVar}"`);
						set.first = cssVar;
						fragment.style.setProperty(`--pagedjs-string-${name}`, `"${set.first}"`);
					} else {
						console.warn(set.value + "needs css replacement");
					}
				} else {
					// Use the previous values
					if (set.first) {
						fragment.style.setProperty(`--pagedjs-string-${name}`, `"${set.first}"`);
					}
				}
			}
		}
	}

	class TargetCounters extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);

			this.styleSheet = polisher.styleSheet;

			this.counterTargets = {};
		}

		onContent(funcNode, fItem, fList, declaration, rule) {
			if (funcNode.name === "target-counter") {
				let selector = lib.generate(rule.ruleNode.prelude);
				let first = funcNode.children.first();
				let func = first.name;

				let value = lib.generate(funcNode);

				let args = [];

				first.children.forEach((child) => {
					if (child.type === "Identifier") {
						args.push(child.name);
					}
				});

				let counter;
				let style;
				let styleIdentifier;

				funcNode.children.forEach((child) => {
					if (child.type === "Identifier") {
						if (!counter) {
							counter = child.name;
						} else if (!style) {
							styleIdentifier = lib.clone(child);
							style = child.name;
						}
					}
				});

				let variable = "target-counter-" + UUID();

				selector.split(",").forEach((s) => {
					this.counterTargets[s] = {
						func: func,
						args: args,
						value: value,
						counter: counter,
						style: style,
						selector: s,
						fullSelector: selector,
						variable: variable
					};
				});

				// Replace with counter
				funcNode.name = "counter";
				funcNode.children = new lib.List();
				funcNode.children.appendData({
					type: "Identifier",
					loc: 0,
					name: variable
				});
				if (styleIdentifier) {
					funcNode.children.appendData({type: "Operator", loc: null, value: ","});
					funcNode.children.appendData(styleIdentifier);
				}
			}
		}

		afterPageLayout(fragment, page, breakToken, chunker) {
			Object.keys(this.counterTargets).forEach((name) => {
				let target = this.counterTargets[name];
				let split = target.selector.split("::");
				let query = split[0];

				let queried = chunker.pagesArea.querySelectorAll(query + ":not([data-" + target.variable + "])");

				queried.forEach((selected, index) => {
					// TODO: handle func other than attr
					if (target.func !== "attr") {
						return;
					}
					let val = attr(selected, target.args);
					let element = chunker.pagesArea.querySelector(querySelectorEscape(val));

					if (element) {
						let selector = UUID();
						selected.setAttribute("data-" + target.variable, selector);
						// TODO: handle other counter types (by query)
						if (target.counter === "page") {
							let pages = chunker.pagesArea.querySelectorAll(".pagedjs_page");
							let pg = 0;
							for (var i = 0; i < pages.length; i++) {
								let styles = window.getComputedStyle(pages[i]);
								let reset = styles["counter-reset"].replace("page", "").trim();

								if (reset !== "none") {
									pg = parseInt(reset);
								}
								pg += 1;

								if (pages[i].contains( element )){
									break;
								}
							}

							let psuedo = "";
							if (split.length > 1) {
								psuedo += "::" + split[1];
							}
							this.styleSheet.insertRule(`[data-${target.variable}="${selector}"]${psuedo} { counter-reset: ${target.variable} ${pg}; }`, this.styleSheet.cssRules.length);
						} else {
							let value = element.getAttribute(`data-counter-${target.counter}-value`);
							if (value) {
								this.styleSheet.insertRule(`[data-${target.variable}="${selector}"]${psuedo} { counter-reset: ${target.variable} ${target.variable} ${parseInt(value)}; }`, this.styleSheet.cssRules.length);
							}
						}
					}
				});
			});
		}
	}

	class TargetText extends Handler {
		constructor(chunker, polisher, caller) {
			super(chunker, polisher, caller);

			this.styleSheet = polisher.styleSheet;
			this.textTargets = {};
		}

		onContent(funcNode, fItem, fList, declaration, rule) {
			if (funcNode.name === "target-text") {
				let selector = lib.generate(rule.ruleNode.prelude);
				let first = funcNode.children.first();
				let last = funcNode.children.last();
				let func = first.name;

				let value = lib.generate(funcNode);

				let args = [];

				first.children.forEach((child) => {
					if (child.type === "Identifier") {
						args.push(child.name);
					}
				});

				let style;
				if (last !== first) {
					style = last.name;
				}

				let variable = "--pagedjs-" + UUID();

				selector.split(",").forEach((s) => {
					this.textTargets[s] = {
						func: func,
						args: args,
						value: value,
						style: style || "content",
						selector: s,
						fullSelector: selector,
						variable: variable
					};
				});

				// Replace with variable
				funcNode.name = "var";
				funcNode.children = new lib.List();
				funcNode.children.appendData({
					type: "Identifier",
					loc: 0,
					name: variable
				});
			}
		}

		afterParsed(fragment) {
			Object.keys(this.textTargets).forEach((name) => {
				let target = this.textTargets[name];
				let split = target.selector.split("::");
				let query = split[0];
				let queried = fragment.querySelectorAll(query);
				queried.forEach((selected, index) => {
					let val = attr(selected, target.args);
					let element = fragment.querySelector(querySelectorEscape(val));
					if (element) {
						if (target.style === "content") {
							let selector = UUID();
							selected.setAttribute("data-target-text", selector);

							let psuedo = "";
							if (split.length > 1) {
								psuedo += "::" + split[1];
							}

							let textContent = element.textContent.trim().replace(/["']/g, (match) => {
								return "\\" + match;
							}).replace(/[\n]/g, (match) => {
								return "\\00000A";
							});

							// this.styleSheet.insertRule(`[data-target-text="${selector}"]${psuedo} { content: "${element.textContent}" }`, this.styleSheet.cssRules.length);
							this.styleSheet.insertRule(`[data-target-text="${selector}"]${psuedo} { ${target.variable}: "${textContent}" }`, this.styleSheet.cssRules.length);

						}
					} else {
						console.warn("missed target", val);
					}
				});

			});
		}
	}

	var generatedContentHandlers = [
		RunningHeaders,
		StringSets,
		TargetCounters,
		TargetText
	];

	var isImplemented$3 = function () {
		var from = Array.from, arr, result;
		if (typeof from !== "function") return false;
		arr = ["raz", "dwa"];
		result = from(arr);
		return Boolean(result && (result !== arr) && (result[1] === "dwa"));
	};

	var validTypes = { object: true, symbol: true };

	var isImplemented$4 = function () {
		if (typeof Symbol !== 'function') return false;
		try { } catch (e) { return false; }

		// Return 'true' also for polyfills
		if (!validTypes[typeof Symbol.iterator]) return false;
		if (!validTypes[typeof Symbol.toPrimitive]) return false;
		if (!validTypes[typeof Symbol.toStringTag]) return false;

		return true;
	};

	var isSymbol = function (x) {
		if (!x) return false;
		if (typeof x === 'symbol') return true;
		if (!x.constructor) return false;
		if (x.constructor.name !== 'Symbol') return false;
		return (x[x.constructor.toStringTag] === 'Symbol');
	};

	var validateSymbol = function (value) {
		if (!isSymbol(value)) throw new TypeError(value + " is not a symbol");
		return value;
	};

	var create$6 = Object.create, defineProperties = Object.defineProperties
	  , defineProperty = Object.defineProperty, objPrototype = Object.prototype
	  , NativeSymbol, SymbolPolyfill, HiddenSymbol, globalSymbols = create$6(null)
	  , isNativeSafe;

	if (typeof Symbol === 'function') {
		NativeSymbol = Symbol;
		try {
			String(NativeSymbol());
			isNativeSafe = true;
		} catch (ignore) {}
	}

	var generateName = (function () {
		var created = create$6(null);
		return function (desc) {
			var postfix = 0, name, ie11BugWorkaround;
			while (created[desc + (postfix || '')]) ++postfix;
			desc += (postfix || '');
			created[desc] = true;
			name = '@@' + desc;
			defineProperty(objPrototype, name, d_1.gs(null, function (value) {
				// For IE11 issue see:
				// https://connect.microsoft.com/IE/feedbackdetail/view/1928508/
				//    ie11-broken-getters-on-dom-objects
				// https://github.com/medikoo/es6-symbol/issues/12
				if (ie11BugWorkaround) return;
				ie11BugWorkaround = true;
				defineProperty(this, name, d_1(value));
				ie11BugWorkaround = false;
			}));
			return name;
		};
	}());

	// Internal constructor (not one exposed) for creating Symbol instances.
	// This one is used to ensure that `someSymbol instanceof Symbol` always return false
	HiddenSymbol = function Symbol(description) {
		if (this instanceof HiddenSymbol) throw new TypeError('Symbol is not a constructor');
		return SymbolPolyfill(description);
	};

	// Exposed `Symbol` constructor
	// (returns instances of HiddenSymbol)
	var polyfill = SymbolPolyfill = function Symbol(description) {
		var symbol;
		if (this instanceof Symbol) throw new TypeError('Symbol is not a constructor');
		if (isNativeSafe) return NativeSymbol(description);
		symbol = create$6(HiddenSymbol.prototype);
		description = (description === undefined ? '' : String(description));
		return defineProperties(symbol, {
			__description__: d_1('', description),
			__name__: d_1('', generateName(description))
		});
	};
	defineProperties(SymbolPolyfill, {
		for: d_1(function (key) {
			if (globalSymbols[key]) return globalSymbols[key];
			return (globalSymbols[key] = SymbolPolyfill(String(key)));
		}),
		keyFor: d_1(function (s) {
			var key;
			validateSymbol(s);
			for (key in globalSymbols) if (globalSymbols[key] === s) return key;
		}),

		// To ensure proper interoperability with other native functions (e.g. Array.from)
		// fallback to eventual native implementation of given symbol
		hasInstance: d_1('', (NativeSymbol && NativeSymbol.hasInstance) || SymbolPolyfill('hasInstance')),
		isConcatSpreadable: d_1('', (NativeSymbol && NativeSymbol.isConcatSpreadable) ||
			SymbolPolyfill('isConcatSpreadable')),
		iterator: d_1('', (NativeSymbol && NativeSymbol.iterator) || SymbolPolyfill('iterator')),
		match: d_1('', (NativeSymbol && NativeSymbol.match) || SymbolPolyfill('match')),
		replace: d_1('', (NativeSymbol && NativeSymbol.replace) || SymbolPolyfill('replace')),
		search: d_1('', (NativeSymbol && NativeSymbol.search) || SymbolPolyfill('search')),
		species: d_1('', (NativeSymbol && NativeSymbol.species) || SymbolPolyfill('species')),
		split: d_1('', (NativeSymbol && NativeSymbol.split) || SymbolPolyfill('split')),
		toPrimitive: d_1('', (NativeSymbol && NativeSymbol.toPrimitive) || SymbolPolyfill('toPrimitive')),
		toStringTag: d_1('', (NativeSymbol && NativeSymbol.toStringTag) || SymbolPolyfill('toStringTag')),
		unscopables: d_1('', (NativeSymbol && NativeSymbol.unscopables) || SymbolPolyfill('unscopables'))
	});

	// Internal tweaks for real symbol producer
	defineProperties(HiddenSymbol.prototype, {
		constructor: d_1(SymbolPolyfill),
		toString: d_1('', function () { return this.__name__; })
	});

	// Proper implementation of methods exposed on Symbol.prototype
	// They won't be accessible on produced symbol instances as they derive from HiddenSymbol.prototype
	defineProperties(SymbolPolyfill.prototype, {
		toString: d_1(function () { return 'Symbol (' + validateSymbol(this).__description__ + ')'; }),
		valueOf: d_1(function () { return validateSymbol(this); })
	});
	defineProperty(SymbolPolyfill.prototype, SymbolPolyfill.toPrimitive, d_1('', function () {
		var symbol = validateSymbol(this);
		if (typeof symbol === 'symbol') return symbol;
		return symbol.toString();
	}));
	defineProperty(SymbolPolyfill.prototype, SymbolPolyfill.toStringTag, d_1('c', 'Symbol'));

	// Proper implementaton of toPrimitive and toStringTag for returned symbol instances
	defineProperty(HiddenSymbol.prototype, SymbolPolyfill.toStringTag,
		d_1('c', SymbolPolyfill.prototype[SymbolPolyfill.toStringTag]));

	// Note: It's important to define `toPrimitive` as last one, as some implementations
	// implement `toPrimitive` natively without implementing `toStringTag` (or other specified symbols)
	// And that may invoke error in definition flow:
	// See: https://github.com/medikoo/es6-symbol/issues/13#issuecomment-164146149
	defineProperty(HiddenSymbol.prototype, SymbolPolyfill.toPrimitive,
		d_1('c', SymbolPolyfill.prototype[SymbolPolyfill.toPrimitive]));

	var es6Symbol = isImplemented$4() ? Symbol : polyfill;

	var objToString = Object.prototype.toString
	  , id = objToString.call(
		(function () {
			return arguments;
		})()
	);

	var isArguments = function (value) {
		return objToString.call(value) === id;
	};

	var objToString$1 = Object.prototype.toString, id$1 = objToString$1.call(noop);

	var isFunction = function (value) {
		return typeof value === "function" && objToString$1.call(value) === id$1;
	};

	var isImplemented$5 = function () {
		var sign = Math.sign;
		if (typeof sign !== "function") return false;
		return (sign(10) === 1) && (sign(-20) === -1);
	};

	var shim$3 = function (value) {
		value = Number(value);
		if (isNaN(value) || (value === 0)) return value;
		return value > 0 ? 1 : -1;
	};

	var sign = isImplemented$5()
		? Math.sign
		: shim$3;

	var abs = Math.abs, floor = Math.floor;

	var toInteger = function (value) {
		if (isNaN(value)) return 0;
		value = Number(value);
		if ((value === 0) || !isFinite(value)) return value;
		return sign(value) * floor(abs(value));
	};

	var max$1 = Math.max;

	var toPosInteger = function (value) {
	 return max$1(0, toInteger(value));
	};

	var objToString$2 = Object.prototype.toString, id$2 = objToString$2.call("");

	var isString = function (value) {
		return (
			typeof value === "string" ||
			(value &&
				typeof value === "object" &&
				(value instanceof String || objToString$2.call(value) === id$2)) ||
			false
		);
	};

	var iteratorSymbol = es6Symbol.iterator
	  , isArray        = Array.isArray
	  , call           = Function.prototype.call
	  , desc           = { configurable: true, enumerable: true, writable: true, value: null }
	  , defineProperty$1 = Object.defineProperty;

	// eslint-disable-next-line complexity
	var shim$4 = function (arrayLike /*, mapFn, thisArg*/) {
		var mapFn = arguments[1]
		  , thisArg = arguments[2]
		  , Context
		  , i
		  , j
		  , arr
		  , length
		  , code
		  , iterator
		  , result
		  , getIterator
		  , value;

		arrayLike = Object(validValue(arrayLike));

		if (isValue(mapFn)) validCallable(mapFn);
		if (!this || this === Array || !isFunction(this)) {
			// Result: Plain array
			if (!mapFn) {
				if (isArguments(arrayLike)) {
					// Source: Arguments
					length = arrayLike.length;
					if (length !== 1) return Array.apply(null, arrayLike);
					arr = new Array(1);
					arr[0] = arrayLike[0];
					return arr;
				}
				if (isArray(arrayLike)) {
					// Source: Array
					arr = new Array(length = arrayLike.length);
					for (i = 0; i < length; ++i) arr[i] = arrayLike[i];
					return arr;
				}
			}
			arr = [];
		} else {
			// Result: Non plain array
			Context = this;
		}

		if (!isArray(arrayLike)) {
			if ((getIterator = arrayLike[iteratorSymbol]) !== undefined) {
				// Source: Iterator
				iterator = validCallable(getIterator).call(arrayLike);
				if (Context) arr = new Context();
				result = iterator.next();
				i = 0;
				while (!result.done) {
					value = mapFn ? call.call(mapFn, thisArg, result.value, i) : result.value;
					if (Context) {
						desc.value = value;
						defineProperty$1(arr, i, desc);
					} else {
						arr[i] = value;
					}
					result = iterator.next();
					++i;
				}
				length = i;
			} else if (isString(arrayLike)) {
				// Source: String
				length = arrayLike.length;
				if (Context) arr = new Context();
				for (i = 0, j = 0; i < length; ++i) {
					value = arrayLike[i];
					if (i + 1 < length) {
						code = value.charCodeAt(0);
						// eslint-disable-next-line max-depth
						if (code >= 0xd800 && code <= 0xdbff) value += arrayLike[++i];
					}
					value = mapFn ? call.call(mapFn, thisArg, value, j) : value;
					if (Context) {
						desc.value = value;
						defineProperty$1(arr, j, desc);
					} else {
						arr[j] = value;
					}
					++j;
				}
				length = j;
			}
		}
		if (length === undefined) {
			// Source: array or array-like
			length = toPosInteger(arrayLike.length);
			if (Context) arr = new Context(length);
			for (i = 0; i < length; ++i) {
				value = mapFn ? call.call(mapFn, thisArg, arrayLike[i], i) : arrayLike[i];
				if (Context) {
					desc.value = value;
					defineProperty$1(arr, i, desc);
				} else {
					arr[i] = value;
				}
			}
		}
		if (Context) {
			desc.value = null;
			arr.length = length;
		}
		return arr;
	};

	var from_1 = isImplemented$3()
		? Array.from
		: shim$4;

	var isImplemented$6 = function () {
		var numberIsNaN = Number.isNaN;
		if (typeof numberIsNaN !== "function") return false;
		return !numberIsNaN({}) && numberIsNaN(NaN) && !numberIsNaN(34);
	};

	var shim$5 = function (value) {
		// eslint-disable-next-line no-self-compare
		return value !== value;
	};

	var isNan = isImplemented$6()
		? Number.isNaN
		: shim$5;

	var indexOf$2           = Array.prototype.indexOf
	  , objHasOwnProperty = Object.prototype.hasOwnProperty
	  , abs$1               = Math.abs
	  , floor$1             = Math.floor;

	var eIndexOf = function (searchElement /*, fromIndex*/) {
		var i, length, fromIndex, val;
		if (!isNan(searchElement)) return indexOf$2.apply(this, arguments);

		length = toPosInteger(validValue(this).length);
		fromIndex = arguments[1];
		if (isNaN(fromIndex)) fromIndex = 0;
		else if (fromIndex >= 0) fromIndex = floor$1(fromIndex);
		else fromIndex = toPosInteger(this.length) - floor$1(abs$1(fromIndex));

		for (i = fromIndex; i < length; ++i) {
			if (objHasOwnProperty.call(this, i)) {
				val = this[i];
				if (isNan(val)) return i; // Jslint: ignore
			}
		}
		return -1;
	};

	var forEach$1 = Array.prototype.forEach
	  , splice  = Array.prototype.splice;

	// eslint-disable-next-line no-unused-vars
	var remove = function (itemToRemove /*, …item*/) {
		forEach$1.call(
			arguments,
			function (item) {
				var index = eIndexOf.call(this, item);
				if (index !== -1) splice.call(this, index, 1);
			},
			this
		);
	};

	var map = { function: true, object: true };

	var isObject$1 = function (value) {
		return (isValue(value) && map[typeof value]) || false;
	};

	var validObject = function (value) {
		if (!isObject$1(value)) throw new TypeError(value + " is not an Object");
		return value;
	};

	var emit           = eventEmitter.methods.emit

	  , defineProperty$2 = Object.defineProperty
	  , hasOwnProperty$6 = Object.prototype.hasOwnProperty
	  , getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;

	var pipe = function (e1, e2/*, name*/) {
		var pipes, pipe, desc, name;

		(validObject(e1) && validObject(e2));
		name = arguments[2];
		if (name === undefined) name = 'emit';

		pipe = {
			close: function () { remove.call(pipes, e2); }
		};
		if (hasOwnProperty$6.call(e1, '__eePipes__')) {
			(pipes = e1.__eePipes__).push(e2);
			return pipe;
		}
		defineProperty$2(e1, '__eePipes__', d_1('c', pipes = [e2]));
		desc = getOwnPropertyDescriptor(e1, name);
		if (!desc) {
			desc = d_1('c', undefined);
		} else {
			delete desc.get;
			delete desc.set;
		}
		desc.value = function () {
			var i, emitter, data = from_1(pipes);
			emit.apply(this, arguments);
			for (i = 0; (emitter = data[i]); ++i) emit.apply(emitter, arguments);
		};
		defineProperty$2(e1, name, desc);
		return pipe;
	};

	let registeredHandlers = [...pagedMediaHandlers, ...generatedContentHandlers];

	class Handlers {
		constructor(chunker, polisher, caller) {

			registeredHandlers.forEach((Handler) => {
				let handler = new Handler(chunker, polisher, caller);
				pipe(handler, this);
			});
		}
	}

	eventEmitter(Handlers.prototype);

	function registerHandlers() {
		for (var i = 0; i < arguments.length; i++) {
			registeredHandlers.push(arguments[i]);
		}
	}

	function initializeHandlers(chunker, polisher, caller) {
		let handlers = new Handlers(chunker, polisher, caller);
		return handlers;
	}

	class Previewer {
		constructor() {
			// this.preview = this.getParams("preview") !== "false";

			// Process styles
			this.polisher = new Polisher(false);

			// Chunk contents
			this.chunker = new Chunker();

			// Hooks
			this.hooks = {};

			// default size
			this.size = {
				width: {
					value: 8.5,
					unit: "in"
				},
				height: {
					value: 11,
					unit: "in"
				},
				format: undefined,
				orientation: undefined
			};

			this.chunker.on("page", (page) => {
				this.emit("page", page);
			});

			this.chunker.on("rendering", () => {
				this.emit("rendering", this.chunker);
			});
		}

		initializeHandlers() {
			let handlers = initializeHandlers(this.chunker, this.polisher, this);

			handlers.on("size", (size) => {
				this.size = size;
				this.emit("size", size);
			});

			handlers.on("atpages", (pages) => {
				this.atpages = pages;
				this.emit("atpages", pages);
			});

			return handlers;
		}

		registerHandlers() {
			return registerHandlers.apply(registerHandlers, arguments);
		}

		getParams(name) {
			let param;
			let url = new URL(window.location);
			let params = new URLSearchParams(url.search);
			for(var pair of params.entries()) {
				if(pair[0] === name) {
					param = pair[1];
				}
			}

			return param;
		}

		wrapContent() {
			// Wrap body in template tag
			let body = document.querySelector("body");

			// Check if a template exists
			let template;
			template = body.querySelector(":scope > template[data-ref='pagedjs-content']");

			if (!template) {
				// Otherwise create one
				template = document.createElement("template");
				template.dataset.ref = "pagedjs-content";
				template.innerHTML = body.innerHTML;
				body.innerHTML = "";
				body.appendChild(template);
			}

			return template.content;
		}

		removeStyles(doc=document) {
			// Get all stylesheets
			let stylesheets = Array.from(doc.querySelectorAll("link[rel='stylesheet']"));
			let hrefs = stylesheets.map((sheet) => {
				sheet.remove();
				return sheet.href;
			});

			// Get inline styles
			let inlineStyles = Array.from(doc.querySelectorAll("style:not([data-pagedjs-inserted-styles])"));
			inlineStyles.forEach((inlineStyle) => {
				let obj = {};
				obj[window.location.href] = inlineStyle.textContent;
				hrefs.push(obj);
				inlineStyle.remove();
			});

			return hrefs;
		}

		async preview(content, stylesheets, renderTo) {

			if (!content) {
				content = this.wrapContent();
			}

			if (!stylesheets) {
				stylesheets = this.removeStyles();
			}

			this.polisher.setup();

			this.handlers = this.initializeHandlers();

			await this.polisher.add(...stylesheets);

			let startTime = performance.now();

			// Render flow
			let flow = await this.chunker.flow(content, renderTo);

			let endTime = performance.now();

			flow.performance = (endTime - startTime);
			flow.size = this.size;

			this.emit("rendered", flow);

			return flow;
		}
	}

	eventEmitter(Previewer.prototype);



	var Paged = /*#__PURE__*/Object.freeze({
		Chunker: Chunker,
		Polisher: Polisher,
		Previewer: Previewer,
		Handler: Handler,
		registerHandlers: registerHandlers,
		initializeHandlers: initializeHandlers
	});

	window.Paged = Paged;

	let ready = new Promise(function(resolve, reject){
		if (document.readyState === "interactive" || document.readyState === "complete") {
			resolve(document.readyState);
			return;
		}

		document.onreadystatechange = function ($) {
			if (document.readyState === "interactive") {
				resolve(document.readyState);
			}
		};
	});

	let config = window.PagedConfig || {
		auto: true,
		before: undefined,
		after: undefined,
		content: undefined,
		stylesheets: undefined,
		renderTo: undefined
	};

	let previewer = new Previewer();

	ready.then(async function () {
		let done;
		if (config.before) {
			await config.before();
		}

		if(config.auto !== false) {
			done = await previewer.preview(config.content, config.stylesheets, config.renderTo);
		}


		if (config.after) {
			await config.after(done);
		}
	});

	return previewer;

}));