.youtube-container { display: block; margin: 20px auto; width: 100%; max-width: 600px; }.youtube-player { display: block; width: 100%; /* assuming that the video has a 16:9 ratio */ padding-bottom: 56.25%; overflow: hidden; position: relative; width: 100%; height: 100%; cursor: hand; cursor: pointer; display: block; }img.youtube-thumb { bottom: 0; display: block; left: 0; margin: auto; max-width: 100%; width: 100%; position: absolute; right: 0; top: 0; height: auto }div.play-button { height: 72px; width: 72px; left: 50%; top: 50%; margin-left: -36px; margin-top: -36px; position: absolute; background: url("http://i.imgur.com/TxzC70f.png") no-repeat; }#youtube-iframe { width: 100%; height: 100%; position: absolute; top: 0; left: 0; }