.article-nav{
            width: 1200px;
            display: table;
        }
        .article-nav .index-nav{
            width: 500px;
            float: left;
            padding-left: 25px;
            padding-top: 20px;
            margin-bottom: 10px;
        }
        .article-nav .index-nav a {
            text-decoration: none;
            margin-right: 20px;
            font-size: 16px;
            font-weight: 400;
            color: #999999;
        }
        .active-link {
            font-size: 20px !important;
            font-weight: 500!important;
            color: #000000 !important;
        }

        .web-body{
            background-color: #fff;
        }
        .material-list{
            width: 1200px;
            display: table;
            background-color: #fff;
        }
        .m-l{
            width: 96%;
            height: 75px;
            margin: 0 auto;
            margin-bottom: 15px;
            background: #F7F7F7;
            margin-top: 20px;
        }
        .material-list .list{
            float: left;
        }
         .material-list .list .title{
             font-size: 14px;
             font-weight: 500;
             color: #000000;
             line-height: 14px;
             padding-left: 20px;
             padding-top: 20px;
        }
        .material-list .list .time{
            font-size: 12px;
            font-weight: 400;
            color: #000000;
            padding-left: 20px;
            padding-top: 10px;
        }
        .material-list .right{
           float: right;
            margin-top: 20px;
            padding-right: 20px;
        }