html,
body {
    margin: 0;
    padding: 0;
    background: #050510;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
}

canvas {
    width: 960px;
    height: 540px;
    image-rendering: pixelated;
    background: #080816;
    box-shadow: 0 0 40px rgba(255, 0, 180, .35);
}