body { 
	-webkit-print-color-adjust: exact;
	color-adjust: exact;
}

page[size="A4"] {
  width: 21cm;
  height: 29.7cm;
  display: block;
  margin: 0;
  box-shadow: 0;
}
@media print {
  body, page[size="A4"] {
    margin: 0;
    box-shadow: 0;
  }
}