.youtube_preview {
    position: relative;
    top: 0;
    left: 0;
    bottom: 0;
    /*height: 100%;*/
    /*width: 100%;*/
    max-width: 100% !important;
    border: 0;
    /*background: url('../img/yt_logo_rgb_dark.png') no-repeat center center;*/
    background-size: cover;
    background-repeat: no-repeat;
    background-color: grey;
    text-align: center;
    vertical-align: bottom;
    display: table-cell;
}

.youtube_preview .text {
    background-color: rgba(0,0,0,0.5);
    color:#fff;
    padding: 10px;
}

.youtube_preview .play-button {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 68px;
    height: 48px;
    margin-left: -34px;
    margin-top: -24px;
    -webkit-transition: opacity .25s cubic-bezier(0,0,.2,1);
    transition: opacity .25s cubic-bezier(0,0,.2,1);
    z-index: 63;
}