@page {
    size: 148.5mm 210mm;
    margin: 12mm 12mm 15mm 12mm;
} 

html {
    width: 148.5mm;
}

* {
    font-family: Karla !important;
}

h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
}

p {
    orphans: 3;
    widows: 3;
}