.yt-hd-thumbnail-inner-container{height:0;padding-top:56.25%;position:relative}.yt-hd-thumbnail-inner-container>a.yt-hd-thumbnail,.yt-hd-thumbnail-inner-container>iframe{display:block;position:absolute;top:0;left:0;right:0;bottom:0;border-width:0}.yt-hd-thumbnail-inner-container>a.yt-hd-thumbnail{z-index:2}.yt-hd-thumbnail-inner-container>a.yt-hd-thumbnail img{max-width:100%}.yt-hd-thumbnail-inner-container>a.yt-hd-thumbnail.yt-hd-thumbnail-darken:before{display:block;position:absolute;content:'';top:0;left:0;right:0;bottom:0;background-color:#000;opacity:.3;-webkit-transition:opacity .3s ease;-moz-transition:opacity .3s ease;transition:opacity .3s ease}.yt-hd-thumbnail-inner-container>a.yt-hd-thumbnail.yt-hd-thumbnail-darken:hover:before{opacity:0}.yt-hd-thumbnail-inner-container>a.yt-hd-thumbnail:after{display:block;position:absolute;content:'';background-image:url(youtube-play.svg);background-size:contain;background-repeat:no-repeat;background-position:center center;width:80px;height:80px;top:50%;left:50%;margin-left:-40px;margin-top:-40px;opacity:.5;-webkit-transition:opacity .3s ease;-moz-transition:opacity .3s ease;transition:opacity .3s ease}.yt-hd-thumbnail-inner-container>a.yt-hd-thumbnail:hover:after{opacity:.8}.yt-hd-thumbnail-inner-container>iframe{max-width:100%;opacity:0;-webkit-transition:opacity .3s ease .3s;-moz-transition:opacity .3s ease .3s;transition:opacity .3s ease .3s}.yt-hd-thumbnail-inner-container.yt-hd-thumbnail-clicked>a.yt-hd-thumbnail{display:none}.yt-hd-thumbnail-inner-container.yt-hd-thumbnail-clicked>iframe{opacity:1}