/* CSS Document */
.content{margin:0 auto;background:#202020;padding:15px 10px;width:100%px;}
.ad_midd{width:100%;margin:0 auto;overflow:hidden;height:400px;position:relative;clear:both; background:#ccc;}
.ad_midd a{ display:block; width:100%; height: 400px; margin: 0 auto; padding: 0; background: none;}

.btm{ margin:30px auto;}
.btm p{ font:normal 12px/24px 'Microsoft YaHei'; text-align:center;}