:root{color-scheme:dark;background:#202820}html,body{margin:0;width:100%;height:100%;overflow:hidden}body{display:grid;place-items:center}#game{width:min(100vw,640px,calc(100dvh * 10 / 9));height:min(100dvh,576px,90vw);box-shadow:0 0 0 8px #182018,0 16px 64px #0005}canvas{display:block;image-rendering:pixelated;image-rendering:crisp-edges;touch-action:manipulation}