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

#starfield {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    display: block;
    pointer-events: none;
}