html {
  background-color: #000;
}

canvas {
  image-rendering: optimizeSpeed;             /* Older versions of FF          */
  image-rendering: -moz-crisp-edges;          /* FF 6.0+                       */
  image-rendering: -webkit-optimize-contrast; /* Safari                        */
  image-rendering: -o-crisp-edges;            /* OS X & Windows Opera (12.02+) */
  image-rendering: pixelated;                 /* Awesome future-browsers       */
  -ms-interpolation-mode: nearest-neighbor;   /* IE                     */
  /* Thanks to stackoverflow user namuol for the above CSS */
  cursor:url("cursor.png"), auto;
  background: #000;
  padding-left: 0;
  padding-right: 0;
  margin-left: auto;
  margin-right: auto;
  margin-top: auto;
  margin-bottom: auto;
  display: block;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}