body, html {
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 0;
    background: #000;
}
#star-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: block;
    z-index: 0;
}