#flashs{ position:relative; height:638px; overflow:hidden;text-align:left;}
#flashs .bgitem{  z-index:1;position:absolute; top:0; }
#flashs .btn{ position:absolute; z-index:7; bottom:25px; left:45%;  right:45%;margin-right:-350px; padding:5px 6px;}
#flashs .btn span{ color:#db0f00;  background:#fff; border:1px solid #db0f00; cursor: pointer;display: inline-block;margin-left: 5px;padding:2px 6px;}
#flashs .btn span.cur{ background:#db0f00; color:#fff;}