YouTube Large player by default

gistfile1.css

/*
   http://blog.hawn.be/2011/10/07/how-to-force-youtube-to-use-expanded-view-by-default-and-even-larger/
 */

div#watch-player.flash-player,
div#watch-player.html5-player,
div#watch-video {
    width: 854px !important; height: 510px !important;
    /* width: 970px !important; height: 580px !important; */
    /* width: 1280px !important; height: 765px !important; */
}
div#watch-sidebar {
    margin-top: 10px !important;
}
div#watch-video-container {
    background-color: #555 !important;
    background-image: -webkit-gradient(linear, left top, left bottom,
                                       from(#555), to(#333)) !important;
}