.head_main .head_middle,.head_main .head_content{width:982px;margin:0 auto}.head_main{position:relative}.head_main .top_toutu_admarks{position:absolute;right:0;top:0;padding:2px;background:#666;font-size:12px;color:#fff;z-index:100;opacity:.75;filter:alpha(opacity=75);line-height:1}