body {
    position: relative;
    width: 100vw;
    height: 100vh;
}

#video-bg {
    background: url('https://guestbook.migunesia.com/storage/_podium/bg-hand.png');
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: 9999;
}

#video-bg video {
    display: none;
    width: 100%;
    height: 100%;
}