* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}
canvas {
    display: block;
    aspect-ratio: 8/7;
    max-width: 100vw;
    max-height: 100vh;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}