html, body { margin: 0; height: 100%; background: #07060c; overflow: hidden; }
body { display: flex; align-items: center; justify-content: center; }
canvas { display: block; image-rendering: auto; box-shadow: 0 0 40px #000; outline: none; touch-action: none; -webkit-tap-highlight-color: transparent; user-select: none; }
noscript { color: #ddd; font: 16px Georgia, serif; padding: 2em; }