#video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(20px);
    transform: scale(1.1) translateZ(0);
    will-change: filter, transform;
    contain: strict;
}

#video.active {
    filter: blur(0);
    transform: scale(1) translateZ(0);
}