* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background: #000;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
canvas {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}