html,body{background:#101414;place-items:center;min-height:100%;margin:0;display:grid}body{align-content:center;gap:16px;min-height:100vh}h1{color:#d9ff66;text-align:center;margin:0;font:28px Arial,sans-serif}canvas{image-rendering:auto;background:#000;outline:1px solid #2f4f4f;width:700px;height:520px}footer{color:#9fb5b0;text-align:center;font:13px Arial,sans-serif}a{color:#d9ff66}