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

canvas {
    position: fixed;
    inset: 0;
    display: block;
}

#loader {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

#loader.fade-out {
    opacity: 0;
    transition: opacity 200ms ease;
}