html,body{background:#0a0a0a;height:100%;margin:0;padding:0}#game{background:radial-gradient(circle at 50% 0,#181018,#000 70%);justify-content:center;align-items:center;min-height:100vh;display:flex}canvas{image-rendering:auto;border-radius:4px;box-shadow:0 0 40px #0009}