html {
  overflow: hidden;
  -ms-touch-action: none;
  -ms-content-zooming: none;
}
body {
  position: absolute;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}
#canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  background: #000;
}