.youtube-video {
    width: 100%;
    height: 0px;
    position: relative;
    margin: 16px 0px;
    padding-bottom: 56.25%;
}

.youtube-video iframe,
.youtube-video video {
    width: 100% !important;
    height: 100% !important;
    position: absolute !important;
    top: 0px;
    left: 0px;
}