.banner{
    width: 100%;
    height: 300px ;
    /* position: relative; */
    /* z-index: 99; */
    z-index: 99;
    /* position: absolute;
    left: 0;
    top: 81px; */
    /* background: url(../images/case/banner_communication.jpg) center 0 no-repeat; */
    background-size: cover;
    overflow: hidden;
}

.banner img{
    width: 100%;
    height: 100%;
}

.banner .banner-header{  
    padding: 30px;
}

.banner-header span,.banner-header a{
    size: 14px;
    color: #ffffff;
    letter-spacing: 1px;
}

.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;
  }

.case{
    width: 98%;
    max-width: 1200px;
    margin: 0 auto;;
    /* font-family: Arial, Helvetica, sans-serif; */
}

.case .intro{
    display: inline-block;
}

.title{
    font-size: 40px;
    /* line-height: 1; */
    letter-spacing: 2px;
    color: #000;
    font-weight:400;
    /* margin-bottom:40px; */
    padding: 30px;
    text-align: center;
    position: relative;
    
  }

  .section{
      margin-top: 40px;
  }

  a:hover{
      text-decoration: none;
  }

  .txt-box{
    width: 40%;
    float: right;
    padding: 20px 0px ;
    text-align: left;
}

.txt-box h3{
    line-height: 1;
    /* padding: 20px 0 0px 0 ; */
    margin-bottom: 0px;
    font-weight: bold;
}

.txt-box span{
    font-size: 16px;
    line-height: 28px;
    text-align: justify;
}

.pic-box{
    width: 50%;
    float: left;
    padding: 20px 0px ;
}

.pic-box img{
    width: 100%;
}

.sub-title{
    line-height: 3;
    font-weight: bold;
    text-align: center;
}

.sub-title::before{
    content: "";
    width: 100px;
    height: 1px;
    display: inline-block;
    background: #aaaaaa;
    vertical-align: middle;
}
.sub-title::after{
    content: "";
    width: 100px;
    height: 1px;
    display: inline-block;
    background: #aaaaaa;
    vertical-align: middle;
}

.policy_support{
    /* margin: 0 15%; */
}

.ul-box{
    width: 100%;
    
}

.ul-box ul{
    width: 100%;
    position: relative;
    display: inline-block;
}

.ul-box ul li{
    width: 50%;
    /* display: inline-block; */
    font-size:14px ;
    line-height: 2;
    float: left;

}

.case-intro-block p{
    text-align: left;
}

.case-high ul{
    width: 100%;
    position: relative;
    display: inline-block;
    background-image:url('http://assets.bjsdzk.com/ic_scense_bg.jpeg')
}

.case-high ul li{
    width: 50%;
    float: left;
    padding: 40px;
    display: inline-block;
}

.case-high-block,.case-intro-block{
    margin: 0 15%;
    text-align: center;
}

.case-high-block h3{
    font-size: 14px;
    color: #333;
    font-weight: bold;
    background-color: #f5f5f5;
    line-height: 2;
    border: 1px solid #f5f5f5;
}

.case-high-block p{
    height: 140px;
    border: 1px solid #f5f5f5;
    color: #fff;
    padding: 15px 30px;
    /* letter-spacing: 1px; */
    font-size: 14px;
    line-height: 1.5;
    text-align: justify;
   
    
}

.slick-pro1.pro2 .pic{
    width: 140px;
    height:140px;
    line-height:140px;
    margin: 0 20px;
    border-radius: 50%;
    margin-bottom:16px;
    text-align:center;
    border:1px solid #f5f5f4;
    background-color: #f5f5f5;
    overflow:hidden;
}

.case-ex{
    width: 100%;
    /* padding: 0 10%; */
    display: inline-block;
}

.case-ex .pic-box{
    width:40% ;
    float: left;
    padding:20px;
    box-shadow: 0 0 10px #b5b5b5;
   
}
/* .safe-border{
    width: 100%;
    padding:20px;
    box-shadow: 0 0 10px #b5b5b5;
  } */


.case-ex .pic-box img{
    height: 300px;
}

.case-ex .txt-box{
    width: 50%;
    float: right;
  
}

.case-ex .txt-box span{
    color: #000;
    line-height: 3;
    /* letter-spacing: 2px; */
    /* font-family: Arial, Helvetica, sans-serif; */
}

.case-ex .txt-box .case_name{
    line-height: 1;
    font-size: 22px;
    color: #237b7c;
    letter-spacing: 2px;
    font-weight: 600;
}

.section-item{
    margin-top: 100px;
}

.line{
    color: #767676;
    margin-top: 15px;
    margin-bottom: 15px;
}

.case-ex-intro{
    margin-top: 20px;
}

.case-ex-intro p{
    line-height: 2;
    letter-spacing: 1px;
}

.slick-pro.pro2 .pic img{
    background: #237b7c
}

.slick-pro.pro2 span{
    width: 100%;
    display: block;
    line-height: 1.3;
    text-align: center;
    margin-top: 20px;
    padding: 0 20px;
    color: #237b7c;
    font-size: 14px;
    word-wrap:break-word; /** 换行 **/
    white-space:normal;
}