:root {
    --bg-color: #000000;
}

body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-color);
}

canvas {
    position: absolute;
    color: red !important;
}