.youtube{
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
}
@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        display: none;
        opacity: 0;
        z-index: -1;
    }
}
#preloader.loaded {
    animation: fadeOut 1s forwards;
}