.des_header{ width:980px; position:relative; height:auto; margin: 0 auto;}
.hx_box_bg{padding:20px 50px; position:relative;}

.hx_box{width:800px;height:500px; overflow:hidden;position:relative; z-index:30; margin: 0 auto;}

.hx_big_box{position:absolute; z-index:40;}
.hx_big_box li{width:800px;float:left; position:relative; z-index:50;}
.hx_big_box li img{ width:100%; height:auto;}

.hx_s{width:900px;height:74px;margin:0 auto;overflow:hidden; position:relative;}
.hx_s_box{ position:absolute; z-index:50;}
.hx_s_box li{ float:left; width:94px; height:74px; margin-right:10px; cursor:pointer; filter:alpha(opacity=70); -moz-opacity:0.7; -webkit-opacity:0.7;opacity: 0.7;}
.hx_s_box li.on{ background:#f00; filter:alpha(opacity=100); -moz-opacity:1; -webkit-opacity:1;opacity: 1;}
.hx_s_box li img{ width:94px; height:72px;}

.btn_left,.btn_right{display:block; background:url(../images/btn_left.png) no-repeat;width:45px; height:45px;position:absolute;z-index:96;}
.btn_left{top:220px; left:0;}
.btn_right{background:url(../images/btn_right.png) no-repeat; top:220px; right:0;}

.des_header_left img{width:598px; height:878px; position:absolute; top:0; right:0;}