Youtube design tuning

youtube.css

/** Youtube Tuning CSS
 * @author		Jan Pecha, 2012-2013
 * @license		New BSD License
 * @version		2013-08-16-1
 */
/*player-width player-height*/
/* Zarovnani na stred */
#yt-masthead, #page-container, #alerts, #footer-hh, #masthead-subnav, #content-container {
	width: 1124px !important;
	margin: 0 auto !important;
}

#page {
	margin: 0 !important;
}

#guide-container {
	left: 0 !important;
}

#watch7-video-container, #watch7-main-container {
	padding-left: 180px !important; /* lepsi mi prijde 181px, ale v zajmu zachovani
		stejneho vzhledu i s ostatnimi castmi YT, necham 180px */
}

/*.site-left-aligned.guide-enabled .watch7-playlist,*/
.site-left-aligned.guide-enabled #watch7-video-container,
.site-left-aligned.guide-enabled #watch7-main-container,
#watch7-container #player { 
	padding-left: 180px !important;
}

.site-left-aligned.guide-enabled #player,
.site-left-aligned.guide-enabled #player-legacy,
.site-left-aligned.guide-enabled #watch7-main-container {
	padding-left: 180px !important;
}


/* Zvyrazneni videi na boku po najeti mysi */
.video-list-item {
	margin-bottom: 9px !important;
	padding-top: 4px !important;
	padding-bottom: 4px !important;
	border: 1px solid transparent !important;
}

.video-list-item:hover {
	background-color: #eee !important;
	border-color: #e2e2e2 !important;
}

Moved into my janpecha/opera-user repository, see file https://github.com/janpecha/opera-user/blob/master/css/youtube/youtube.css