.nbYoutube {overflow: hidden; background-color: #000; background-position: center; background-repeat: no-repeat; position: relative; background-size: cover;} 
.nbYoutube .play { cursor: pointer; cursor: hand; background: url(images/youtubeBtn.png) no-repeat center center; position: absolute;height: 100%; width: 100%; opacity: .8; filter: alpha(opacity=80); transition: all 0.2s ease-out; top: 0px; left: 0px;}
.nbYoutube .play:hover { opacity: 1; filter: alpha(opacity=100);}
.nbYoutube .nbYoutubeContainer {position: relative; padding-bottom: 56.25%; padding-top: 30px; height: 0; overflow: hidden;} 
.nbYoutube .nbYoutubeContainer iframe {position: absolute; top: 0; left: 0; width: 100%; height: 100%;}