html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    position: fixed;
    background-color: black;
    color: white;
    touch-action: none;
    overflow: hidden;
}

canvas {
    width: 100%;
    height: 100%;
    touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    outline: none;
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
    z-index: -1;
}