/* 顶部导航栏 */
        .header{
            width:100%;
            height:45px;
            box-shadow:0 2px 1px 3px #eee;
        }
        .head-main{
            max-width:1140px;
            height:100%;
            margin:0 auto;
            display:flex;
            justify-content: space-between;
            align-items: center;
            padding:0 10px;
            box-sizing: border-box;
        }
        .head-left{
            font-size:16px;
            font-weight:bold;
            cursor:pointer;
            transition:.4s all;
        }
        .head-left:hover{
            opacity: .8;
        }
        .head-right a{
            margin-right:8px;
            transition:.4s all;
        }
        .head-right a:hover,.head-right .active{
            color:#1890ff;
        }