body {

}

.immersive-video-background {
    position: relative;
    min-width: 100%;    
    min-height: 100%;
    z-index: 0;
    background-color: black;
    overflow:hidden;
}


video {
    position:absolute;
    top: 0;
    left: 0;
    bottom:0;
    right: 0;
    min-width: 100%;
    min-height: 100%;
    object-fit: cover;   
    z-index: -1;
}