#background-video1 {
height: 100vh;
width: 100vw;
object-fit: cover;
position: fixed;
left: 0;
right: 0;
top: 0;
bottom: 0;
z-index: -1;
}

.video-container {
    position: relative !important;
    width: 100% !important;
    padding-bottom: 56.25% !important; /* ratio 16:9 */
    height: 0 !important;
}
.video-container iframe {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
}