.main{
    position: relative;
    display: block;
  }
  .navbar{
      white-space: nowrap;
      width: 100%;
      min-width: 1200px;
      background: #ffffff;
  }
  
  .navbar .container {
      width: 1200px;
      min-width: 1200px;
    }
    .navbar .navbar-header {
      margin-right: 35px;
    }
  
  .navbar li a {
      color: #000;
    }
  
    .news-container{
      width: 100%;
      height: 100%;
    
      position: absolute;
      left: 0;
      top: 81px;
      
    }

    .dropdown:hover .dropdown-det{
      display: block;
    }
    
    .dropdown .sel-menu,.code .sel-menu{
      margin-top: 0px;
      position: absolute;
      top: 99%;
      left: 0;
      z-index: 1000;
      display: none;
      float: left;
      min-width: 160px;
      padding: 5px 0;
      margin: 2px 0 0; 
      list-style: none;
      font-size: 14px;
      text-align: left; 
      background-color: #fff;
      border: 1px solid #ccc;
      border: 1px solid rgba(0, 0, 0, .15);
      border-radius: 4px;
      
      background-clip: padding-box;
    }
    
    .dropdown .sel-menu li{
      display: block;
      width: 100%;
      height: 50px;
      color: #464749;
      line-height: 50px;
      text-align: center;
      font-size: 12px;
    }
    
    .dropdown .sel-menu li a:hover{
      background-color: #dedede;
    }
    
    .dropdown-det{
      display: none;
    }

    .code:hover .dropdown-det{
      display: block;
    } 
    
    .code .sel-menu img{
      display: block;
      width: 200px;
      height: 200px;
      z-index: 9999;
    }

    .banner{
      width: 100%;
      height: 360px;
      /* position: relative; */
      /* z-index: 99; */
      z-index: 99;
      /* position: absolute;
      left: 0;
      top: 81px; */
      background: url("http://assets.bjsdzk.com/news_banner_up.jpg") center 0 no-repeat;
      background-size: cover;
      
    }

    .list{
width: 80%;
margin: 20px auto;

    }

    

    .news-list{
        width: 100%;
        max-height: 280px;
        margin: 30px;
        position: relative;
        overflow: hidden;
        background-color: #f8f8f8;
        /* border: 1px solid #cccccc; */
      }
    
      .news-list-l{
        width: 30%;
        float: left;
      }
    
      .news-border{
        width: 100%;
        padding:10px;
        margin: 8px;
        box-shadow: 0 0 10px #b5b5b5;
      }

      .news-list-l img{
          width: 100%;
          height: 200px;
          border-radius: 4px;
          /* max-height: 250px; */
          /* src: url(../images/); */
      }
    
      .news-device{
        width: 100%;
      }
    
      .news-list-r{
        width: 60%;
        float: right;
        padding: 0 30px;
        max-height: 250px;
        overflow: hidden;
        /* position: relative; */
      }
    
      .news-list-r h3{
        font-size: 16px;
        color: #237b7c;
        /* line-height: 1; */
        letter-spacing: 2px;
        font-weight: 600;
        line-height: 20px;
        /* display: inline-block; */
        margin-top: 30px;
        /* position: absolute;
        top: 30px; */
      }

      .news-list-r .intro{
          display: inline-block;
          font-size: 14px;
          color: #767676;
          margin-top: 15px;
          line-height: 20px;
          /* position: absolute;
          bottom: 30px; */
      }

      .news-list-r .news-time{
        display: inline-block;
        font-size: 12px;
        color: #767676;
        position: absolute;
        bottom: 30px;
      }

      .news-iframe{
        width: 100%;

        height: 100%;
        border: 1px solid #000;
      }