body {
    margin: 0;
    padding: 0;
}

#container {
    position: fixed;
    touch-action: none;
}

#description {
    background: #FFF;
    left: 50%;
    margin: 150px 0 0 0;
    padding: 10px;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    z-index: 2;
    font-size: 15px;
}