html {
    background: black;
}

body {
    background-image: url("img/BG.png");
    background-size:     cover;
    background-repeat:   no-repeat;
    background-position: center center;
    margin: 0;
    padding: 0;
    overflow: hidden;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    top: 0;
    touch-action: none;
    user-select: none;
}