:root{background:#000}*{box-sizing:border-box;margin:0;padding:0}html,body{background:#000;width:100%;height:100%;overflow:hidden}#app{background:#000;justify-content:center;align-items:center;width:100vw;height:100vh;display:flex}canvas#game{image-rendering:pixelated;image-rendering:crisp-edges;background:#000}