.page-header, .page-header-space {
  height: 100px;
}

.page-footer, .page-footer-space {
  height: 50px;

}

.page-footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  border-top: 1px solid black; /* for demo */
  background: yellow; /* for demo */
}

.page-header {
  position: fixed;
  top: 0mm;
  width: 100%;
  border-bottom: 1px solid black; /* for demo */
  background: yellow; /* for demo */
}

.page {
  page-break-after: always;
}

@page {
  margin: 20mm
}

@media print {
   thead {display: table-header-group;} 
   tfoot {display: table-footer-group;}
   
   button {display: none;}
   
   body {margin: 0;}
}