.fullscreen-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    z-index: -1;
}

.fullscreen-video video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}