body {
    margin: 0;
    background: black;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* Upscaled 2x */
canvas {
    width: 512px;
    height: 480px;
    image-rendering: pixelated;
    border: 30px solid black;
    background: black;
}