#social{
	position: fixed;
	left: 0;
	top: 140px;
	width: 60px;
	height: 320px;
	z-index: 999;
}
#social .social_item{display:inline-block}#social .social_item:hover{background-repeat:no-repeat;background-position:0 top}#social .social_item a{width:40px;height:40px;display:block;text-decoration:none;background-color:#ddd;color:#000;font-size:16px;text-align:center;margin:2px 0;line-height:40px}#social .social_item a:hover{background-repeat:no-repeat;background-position:0 top;color:#000}