/* style sheet for "A4" printing */
@media print and (width: 21cm) and (height: 29.7cm) {
     @page {
        margin: 2cm;
     }
}
/* style sheet for "letter" printing */
@media print and (width: 8.5in) and (height: 11in) {
    @page {
        margin: 1in;
    }
}

/* A4 Landscape*/
@page {
    size: A4 landscape;
    margin: 10%;
}