html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
}

#viewporter {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
}

canvas {
  display: block;
  image-rendering: optimizeSpeed;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  -ms-interpolation-mode: nearest-neighbor;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-touch-callout: none;
}