.mian-body{ width:100%; margin:0 auto; min-height:500px; background:#e0e2e4; padding-bottom:40px; }
.mian-body-m{ width:1400px; min-height:720px; margin:-60px auto 0 auto; background:#fff; position:relative; padding-top:60px; padding-bottom:100px; }

.ztzl-m{ width:1140px; min-height:300px; margin:0 auto; }
.ztzl-m-m{ width:550px; height:230px; float:left;}
.ztzl-m-m img{ width:550px; height:160px;}
.ztzl-m-m-nav{ width:550px; height:66px; background:#55b531; border-top:#fff solid 3px; }
.ztzl-m-m-nav a{line-height:66px; font-size:22px; color:#fff; margin-left:30px;}
.ztzl-m-m-nav a:hover{ color:#333;}