* {
    user-select: none;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
}

canvas#background-canvas {
    margin: 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden !important;
    z-index: -1;
}