.top_iframe{width:980px;margin:0 auto;position:relative}#platform_iframe_head{display:block;overflow:hidden}.top_iframe .top_toutu_admarks{position:absolute;right:2px;top:0;padding:2px;background:#666;font-size:12px;color:#fff;z-index:100;opacity:.75;filter:alpha(opacity=75);line-height:1}