.top{height:22px;width:100%;}
.banner3,.zt3_nav{margin: 0 auto;}
.banner3{background:url(/yndzj/resource/cms/2016/12/banner-bg.jpg) no-repeat;background-size:100%;background-position:50% 50%; height:235px;}
.wzb-head{width:1100px;margin:0 auto;position:relative; top:52px; }
.banner{bottom:5px;left:8px;position:absolute; }
.zt-demo{width:1100px; margin:0 auto;}
.zt-demo .zt{float:right; margin-top:70px}


.sy2_main{background:#eeeeee;}
.zt3_nav{border-bottom:1px solid #4a90e2;width:1100px;}
.zt2_main{width:1100px;padding:10px;background: #fff;margin:0 auto;}

.con-left{width:680px; margin-left:10px;}
.con-right{width:370px; margin-right:10px;}