.popup-youtube {
    position: relative;
}
.popup-youtube .fa-youtube-play {
    color: #FF0000;
    font-size: 60px;
    position: absolute;
    top: 50%;
    margin-top: -23px;
    left: 50%;
    margin-left: -33px;
}

.popup-youtube img {
    border: 1px solid #5dbbc5;
}