.tab {
            border-bottom: 1px solid #e60012;
            height: 28px;
        }
        
        .tab>div {
            float: left;
            font-size: 16px;
            font-weight: 700;
            color: #484848;
            height: 28px;
            line-height: 28px;
            padding: 0 4px;
            text-align: center;
            cursor: pointer;
            margin-right: 20px;
        }
        
        .tab>div:hover {
            color: #ac051d;
        }
        
        .tab>.active {
            color: #ac051d;
            border-bottom: 4px solid #e60012;
            margin-top: -1px;
            line-height: 30px;
        }
        
        .tab a {
            padding-left: 20px;
            background: url(../img/san.png) no-repeat 0 center;
            float: right;
            font-size: 12px;
            line-height: 30px;
            display: none;
        }
        
        .tab a.show {
            display: block;
        }
        
        .tab_box {
            padding: 8px 12px;
            overflow: hidden;
            width: 522px;
        }
        
        .ban {
            overflow: hidden;
            width: 546px;
        }
        
        .tab_box ul {
            overflow: hidden;
            margin-top: 0px;
        }
        
        .tab_box li {
            list-style: square inside;
            height: 35px;
            line-height: 35px;
            clear: both;
            color: #adaaaa;
            width: 100%;
        }
        
        .tab_box li a {
            color: #484848 !important;
            font-size: 14px;
        }
        
        .tab_box li a:hover {
            color: #e60012;
        }
        
        .tab_box li span {
            float: right;
            font-size: 10px;
        }
        
        .ban li.section {
            background-size: 546px, 210px;
        }
        
        .ban li.section img {
            height: 210px;
            width: 546px;
        }
        
        .ban .sections {
            height: 280px;
            margin-top: 0px;
        }
        
        .tb-btn {
            right: 10px;
        }
        
        .tb-btn a.active {
            background-color: #ac051d !important;
        }
        
        .preface {
            width: 546px;
            height: 292px;
            background: url(http://www.sinosure.com.cn/40zn/images/qy.png) center center no-repeat;
            float: left;
            margin-top: 20px;
background-size:100% 100%;
position: relative;
        }
        .preface div{
position: absolute;
    top: 44px;
    left: 180px;
    font-size: 23px;
    background: #fff;
    display: inline-block;
    width: 105px;
    color: #c7100a;
    text-align: center;
        }
        .zjxb_title {
            position: relative;
        }
        
        .zjxb_title>span {
            position: absolute;
            top: 16px;
            left: 21px;
            font-size: 23px;
            background: #fff;
            display: inline-block;
            width: 105px;
            color: #c7100a;
            text-align: center;
        }
      
.banner {
width: 100%;
    height: 500px;
    overflow: hidden;
    position: relative;
    z-index: 1;
    min-width: 1120px;
    max-width: 1920px;
    background: url(./banner.png) no-repeat center center;
}
.zjxb>a {
    float: right;
    margin-right: 30px;
    color: #c7100a;
}
.preface p {
    width: 488px;
    margin: auto;
    line-height: 28px;
    color: #666666;
    margin-top: 90px;
    font-size: 14px;
}