html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  width: 700px;
  height: 520px;

}

#map_canvas {
   margin-top: 20px;
   margin-bottom: 20px;
   margin-left: 10px;
   border: 2px dashed #000;
   width: 600px;
   height: 480px;
}

@media print {
  html, body {
    height: auto;
  }

  #map_canvas {
    margin-top: 50px;
    margin-left: 20px;
    border: 2px dashed #0000;
    height: 650px;
  }
}