*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #2a2a2a;
}

#canvas {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}