.youtube-player {
    display: block;
    width: 100%;
    height: 100%;
    padding-bottom: 56.25%;
    overflow: hidden;
    /* position: relative; */
    cursor: hand;
    cursor: pointer;
}
img.preview-image {
    display: block;
    left: 0;
    bottom: 0;
    margin: auto;
    max-width: 100%;
    width: 100%;
    position: absolute;
    right: 0;
    top: 0;
    height: auto;
}
div.youtube-play {
    height: 64px;
    width: 64px;
    left: 50%;
    top: 50%;
    margin-left: -36px;
    margin-top: -36px;
    opacity: 0.7;
    position: absolute;
    background: url("https://cdn2.iconfinder.com/data/icons/social-icons-color/512/youtube-64.png")
        no-repeat;
}
div.youtube-play:hover {
    opacity: 1;
}
.youtube-iframe {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}