@media print {
    @page {
        size: A4; /* DIN A4 standard, Europe */
        margin:0;
    }
    html
    {
        background-color: #FFFFFF;
        margin: 0px;  /* this affects the margin on the html before sending to printer */
    }
    body
    {
        margin: 10mm 15mm 10mm 15mm; /* margin you want for the content */
    }
}