html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
  touch-action: none;
}

#game {
  width: 100%;
  height: 100%;
}

canvas {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}