* {
    box-sizing: border-box;
}

.video-background {
    background: #000;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: -99;
}

    .video-foreground,
    .video-background iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
    }

#video-overlay {
    z-index: 2;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: 50% 50%;
}

@media (min-aspect-ratio: 16/9) {
    .video-foreground {
        height: 300%;
        top: -100%;
    }
}

@media (max-aspect-ratio: 16/9) {
    .video-foreground {
        width: 300%;
        left: -100%;
    }
}