.main{
    position: relative;
    display: block;
    /* font-family: Arial, Helvetica, sans-serif; */
  }
  .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;
    }
  
    .case-container{
      width: 100%;
      height: 100%;
      position: absolute;
      left: 0;
      top: 81px;
    }
  
    .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/case_banner.png) center 0 no-repeat;
      background-size: cover;
      
    }
  
    /* .banner-bg{
      width: 100%;
      position: relative;
      max-height: 100%;
      height: 360px;
     
    } */
  
    /* .banner-in{
      height: 300px;
      z-index: 99;
      position: relative;
      
      
    margin: 0 auto;
    }
  
    .banner-intro{
      position: absolute;
      top: 150px;
      left: 20px;
      right: 20px;
    }
  
    .banner-in span{
      
      color: #fff;
      font-size: 32px;
      letter-spacing: 2px;
      line-height: 45px;
      
    }
  
    .banner-in .intro{
      display: block;
      font-size: 16px;
      margin-top: 10px;
    } */

    .case-tab-nav{
        text-align: center;
          height: 40px;
          width:100%;
          background-color:rgba(0,0,0,0.7);
        margin-top:-40px;
        z-index: 2;
        /* position: relative; */
       
        }
      
        .fix{
          zoom: 1;
        }
      
        .case-tab-nav ul {
          /* display: inline-block;
          margin: 0 auto; */
          margin-left: 30px;
        }
        .case-tab-nav ul li {
          width: 120px;
          height: 40px;
          text-align: center;
          line-height: 40px;
          float: left;
          cursor: pointer;
          font-size: 14px;
          letter-spacing: 1px;
          text-align:center;
          color: #fff;
        }
        .case-tab-nav ul li a{
          width: 120px;
          height: 40px;
          display:block;
          color: #ffffff;
          float:left
        }
      
        
        .case-tab-nav ul li.sidenav-focus {
          background-color: #3fb8bf;
        }

        .navigation {
            font-size: 14px;
            letter-spacing: 1px;
            color: #b5b5b5;
            line-height: 90px;
            width: 1200px;
                /* margin: 0 auto; */
            /* margin-top:px; */
            padding: 0 30px;
          }
        
          .navigation a {
            color: #727272;
          }

          .safewrap,.safe,.case-item{
            width: 100%;
            height: 100%;
          }



          .case-item h2{
            font-size: 32px;
            /* line-height: 1; */
            letter-spacing: 2px;
            color: #535353;
            font-weight:lighter;
            margin-bottom:40px;
            padding: 0 30px;
            position: relative;
          }
        
        
        
/* a:hover{
    text-decoration: none;
} */
.case-item ul{
    width: 100%;
   padding-left: 10%;
   padding-right: 10%;
   }
 
   .case-item li{
     width: 25%;
     /* max-width: 300px; */
    /* border: 1px solid #000; */
    margin-bottom: 40px;
     /* height: 259px; */
     float: left;
     /* padding: 0 80px; */
     display: inline-block;
     position: relative;
     overflow: hidden;
     text-align: center;
     padding: 0px 25px;
     color: white;
     
   } 

   .case-item .ipic{
     width: 100%;
     position: relative;
     overflow: hidden;
   }

   .case-item .ipic img{
       width: 100%;
       height: 250px;
       max-height: 250px;
       -webkit-transition:.3s;-o-transition:.3s;transition:.3s;
       -webkit-backface-visibility:hidden;
       -moz-backface-visibility:hidden;
       -ms-backface-visibility:hidden;
       backface-visibility:hidden
   }

  

   .case-item ul li .ipic:after{
    content:'';
    position:absolute;
    top:0;bottom:0;left:0;right:0;
    /* background:url(../images/icon-so.png) center no-repeat; */
    background-color:rgba(5,70,148,.4);
    opacity:0;
    z-index:2;
    -webkit-transition:.3s;
    -o-transition:.3s;
    transition:.3s
   }
   
   .case-intro{
       background: #ebebeb;
       width: 100%;
       margin-top: -2px;
       padding: 15px 0px;
       display: inline-block;
       -webkit-transition:.3s;-o-transition:.3s;transition:.3s
   }

   .case-intro span{
       font-weight: bold;
       font-size: 14px;
       color: #393939;
       -webkit-transition:.3s;-o-transition:.3s;transition:.3s
   }

   .case-item ul a:hover .ipic img{
    -webkit-transform:scale(1.05);-ms-transform:scale(1.05);-o-transform:scale(1.05);transform:scale(1.05)
 }

   .case-item ul a:hover .case-intro{
     background: #3fb8bf;
     color: #fff;
   }

   .case-item ul a:hover .case-intro span{
     color: #fff;
   }

   .case-item ul a:hover .ipic::after{
     opacity: 1;
   }
   
   .terminal{
    /* width: 100%; */
    min-width: 300px;
    background-color: #efefef;
    padding: 20px;
    text-align: center;
    
    bottom: 20px;
  }

  .terminal h3{
    font-size: 14px;
    line-height: 1;
    letter-spacing: 1px;
    color: #333;
    font-weight:600;
    margin-bottom:20px;
  }

  .terminal .terminal-intro{
    font-size: 12px;
    color: #444444;
    line-height: 20px;
    text-align: left;
    display: inline-block;
    max-height: 100px;

    /* white-space:nowrap; */
  }

  .terminal-detail{
    width: 100px;
    background-color: #bbbbbb;
    border-radius: 15px;
    padding: 8px 0px;
    margin: 20px auto 0;

  }

  .terminal-detail span{
    font-size: 12px;
    color: #fff;
  }