@page {
  size: auto; /* auto is the initial value */
  margin: 0mm; /* this affects the margin in the printer settings */
}

html {
  background-color: #ffffff;
  margin: 0px; /* this affects the margin on the html before sending to printer */
}

body {
  border: 0px;
  margin: 10mm 15mm 10mm 15mm; /* margin you want for the content */
}