* { padding:0; margin:0; font-size:12px; } ol,ul,li { list-style:none } img { border:none } /* box */ .box { width:564px; height:361px; margin:20px auto; position:relative; display:none; } .ad_time { width:554px; height:351px; background:#000; filter:alpha(opacity=50); -moz-opacity:0.5; opacity:0.5; padding:5px; position:absolute; top:0; left:0; color:#fff; } .ad_time span { font-weight:bold; color:#cc0; padding:0 5px; } .close { width:49px; height:20px; position:absolute; top:0; right:0; cursor:pointer; } .btn { width:100px; height:30px; background:#eee; border:1px solid #ddd; font:normal 12px/30px '微软雅黑'; text-align:center; margin:20px auto; cursor:pointer; }