.ytplaceholder {
    position: relative;
    position: relative;
    overflow: hidden;
    padding-top: 56.25%;
}

.ytplaceholder img {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    object-fit: cover
}

.ytplaceholder iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    opacity: 0;
    transition: opacity 2.4s ease 0s;
}