canvas{
    display:block;
    width:100%;   /* CSS size — script will set pixel size for crispness */
    height:85%;
  }

  /* Mobile-specific styles */
@media screen and (max-width: 900px) {
  canvas{
    display:block;
    width:95%;   /* CSS size — script will set pixel size for crispness */
    height:100%;
    margin-bottom: 8%;
  }
}