.video-container{
    position: absolute;
    top: 0;
    left: 0;
    z-index: -3;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
.video-container video{
    position: relative;
    top: 50%;
    left: 50%;
    object-fit: cover;
    width: 100%;
    height: 100%;
    transform: translate(-50%,-50%);
}