body {
  display: flex;
  margin: 0;
  padding: 0;
  background: #000;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  pointer-events: none;
}
canvas {
  width: 100vh;
  max-width: 100%;
  height: auto;
  max-height: 100%;
  image-rendering: pixelated;
}