@namespace url(http://www.w3.org/1999/xhtml);
@-moz-document url-prefix("http://youtube.com/watch"),
url-prefix("http://www.youtube.com/watch"){

div:not(:first-child),td:not(:first-child),#logoTagDiv{display:none!important;}

#baseDiv{width:auto!important;text-align:center!important;}

}