* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; height: 100%; overflow: hidden; background: #000; }
body { display: flex; align-items: center; justify-content: center; }
canvas {
  display: block;
  touch-action: none;
  background: #050510;
  position: absolute;
}