html,body{margin: 0;padding: 0;}
/* body设置最大宽度并居中防止4K屏 */
body{max-width: 1920px;margin: 0 auto;font-family: "微软雅黑",arial,helvetica,sans-serif,"宋体"; font-size: 16px; color:#333;}
a{text-decoration: none;}
ul,h1,h2,h3,h4,h5{list-style: none;padding: 0;margin: 0;}
.fl{float: left;}
.fr{float: right;}
.clearfix{clear: both;}

  /*头部*/
  .header-box{width: 100%;min-width: 1370px;height: 180px;background:#1d375a url('../testimages/header/header-bg.jpg') center center no-repeat;}
  .header-center{width: 1370px;margin: 0 auto;padding-top: 48px;}
  .search-box{margin-top: 22px;position: relative;}
  .search-inp{width: 268px;height: 40px;padding-left: 16px;padding-right: 43px;color:#4d4d4d;font-family: "kaiti";font-size: 16px;box-sizing: border-box;border:0;
              border-radius: 4px;-webkit-border-radius:4px;-moz-border-radius:4px;-ms-border-radius:4px;-o-border-radius:4px;}
  .search-inp::-webkit-input-placeholder{color: #999;}
  .search-inp::-moz-placeholder{color: #999;}
  .search-inp::-o-placeholder{color: #999;}
  .search-inp::-ms-input-placeholder{color: #999;}
  .search-btn{position: absolute;top:9px; right: 12px;outline:none;}

  /*导航*/
  .nav-bg{width: 100%;min-width: 1370px;height: 64px;background:#1d375a url('../testimages/header/nav-bg.jpg') center no-repeat;}
  .nav-box{width: 1370px;margin: 0 auto;padding: 0 1px;}
  .nav-box li{float: left;width: 152px;height: 64px;line-height: 64px;text-align: center;position: relative;}
  .nav-box li a {width: 100%;height: 64px;display:block;color:#fff;font-size: 20px;}
  .nav-box li:hover{background: #052f4d url('../testimages/header/nav-hover.png') center no-repeat;}
  .nav-box .navact{background: #052f4d url('../testimages/header/nav-hover.png') center no-repeat;}
  /* 二级 */
  .secondnav{position: absolute;z-index: 999;top:64px;display: none;}
  .nav-box li .seconditem{min-width: 152px;height: 48px;line-height: 48px; font-size: 18px;color:#fff;text-align: left;padding: 0 40px;box-sizing: border-box;white-space: nowrap;
        background-color: rgba(4, 52, 89,0.86);}
  .nav-box li .seconditem:hover{background: #052f4d;}
  .nav-box li:hover .secondnav{display: block;}
   

      



  /*footer*/
  .footer-bg{width: 100%;min-width: 1370px;height: 300px;background:#1d375a url('../testimages/footer/footer-bg.jpg') center no-repeat;}
  .footbox{width: 1370px;margin: 0 auto;padding-top: 75px;position: relative;}
  .footlogo{position: absolute;top: 75px;left: 0;}
  .connect{margin-left: 510px;float: left;}
  .on-cam{width: 232px;height: 28px;background:url('../testimages/footer/on-campus.png') center left no-repeat;padding-left: 32px;box-sizing: border-box;float: left;}
  .camdown{width: 200px;height: 28px;background:#fff url('../testimages/footer/footdown.png') 95% center no-repeat;padding-left: 9px;box-sizing: border-box;position: relative;
          color:#002037;font-size: 14px;line-height: 28px;border-radius: 4px;-webkit-border-radius:4px;-moz-border-radius:4px;-ms-border-radius:4px;-o-border-radius:4px;}
  .off-cam{width: 232px;height: 28px;background:url('../testimages/footer/off-campus.png') center left no-repeat;padding-left: 32px;box-sizing: border-box;margin-left: 17px;float: left;}
  .camdrop{width: 230px;padding-top: 3px; background: #fff;position: absolute;left: 2px;bottom:28px;border-bottom: 1px solid #1d375a;display:none;z-index: 999;}
  .camdrop a{display:block;width: 100%;height: 24px;line-height: 24px;color:#333;padding-left: 9px;box-sizing: border-box;}
  .camdrop a:hover{background: #1d375a;color:#fff;}
  .camdown:hover .camdrop{display: block;}

  .address{color:#fff;margin-top: 32px;}
  .addmar{margin-left: 24px;}
  .phone{color:#fff;margin-top: 24px;}
  .admin{margin-left: 24px;color:#fff;}
  .admin:hover{text-decoration: underline;}
  
  .orcodebox{float:left;width: 114px;height: 140px;margin-left: 208px;}
  .orcode{width: 100%;height: 114px;}
  .orcode img{width:100%;height: 100%;}
  .ortxt{font-size: 12px;color:#fff;text-align: center;padding-top: 5px;}
  .copyrig{height: 56px;border-top:1px solid #414e61;line-height:26px;color:#fff;margin-top: 28px;}
  .pyri{margin-left: 510px;}



  .aaa{width: 120;}