:root { color-scheme: dark; background: #00ff00; }
* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: #00ff00; }
main { position: fixed; inset: 0; }
canvas { position: absolute; bottom: 0; left: 0; display: block; width: 100%; height: auto; image-rendering: pixelated; image-rendering: crisp-edges; }