.nav{ width:100%; margin:0 auto;background:#eeeeee;height: 59px;max-width:1920px}
.nav ul li{float:left;display: inline;text-align: center;font-size: 16px; position: relative;}
.nav ul li:last-child{margin-right: 0;}
.nav ul li a{color:#000;display: block;height: 59px;line-height: 59px;padding: 0 28px;position: relative;z-index: 2; }
.nav ul li a:hover,.nav ul li.on{ background: #F39800; color:#FFF }
.nav ul li dl{margin:0px;padding:0;position:absolute;z-index:999;display:none;}
.nav ul li dl dt a{display:block;width:120px; height:50px; line-height:50px; text-align:center;background:#eeeeee;color:#000;}
.nav ul li dl dt a:hover{background:#F39800; display:block;width:120px; height:50px;}


.bannera{overflow:hidden;position:relative;}
.bannera .hd{height:18px;position:absolute;width: 100%;z-index:1; text-align: center; bottom: 20px;}
.bannera .hd ul li{display: inline-block;margin:0 5px;width:15px;height:15px;cursor:pointer;background:#0d77e5;border-radius:8px;}
.bannera .hd ul li.on{background: #69c248;}
.bannera .bd{position:relative;height:100%;z-index:0;}
.bannera .bd li{zoom:1;vertical-align:middle;width:100%;height:600px;display:block;}
.bannera .bd li a{width:100%;height:500px;display:block;}
.bannera .prev{position:absolute;left:3%;top:50%;margin-top:-25px;display:block;width:17px;height:31px;background:url(../images/left.png) no-repeat;filter:alpha(opacity=100);opacity:1;}
.bannera .next{position:absolute;right:3%;top:50%;margin-top:-25px;display:block;width:17px;height:31px;background:url(../images/right.png) no-repeat;filter:alpha(opacity=100);opacity:1;}