.daohangtiao{
            position: fixed;
            left: 0;
            top: 0;
            width: 100%;
            background-color: #000000;
        }
        .logo,.logo>span {
            font-size: 3rem;
            font-weight: 600;
        }
        .logo {
            color: #fff;
            margin-left: 2rem;
            margin-top: 1rem;
            float: left;
        }
        .logo:hover {
            cursor: pointer;
        }
        .logo>span{
            color: rgb(240, 1, 200);
        }
        .caidan {
            clear: both;
            display: inline-block;
            position: absolute;
            top: 1rem;
            right: 0rem;
        }
        .caidan>ul {
            
            align-content: center;
            display: inline-block;
            color: #fff;
        }
        .caidan>ul {
            overflow: hidden;
            clear: both;
        }
        .caidan>ul>li {
            float: right;
            font-size: 1.5rem;
            list-style-type: none;
            margin-right: 2rem;
        }
        .caidan>ul>.licaidan:hover {
            cursor: pointer;
            border-block-end: 0.3rem solid #fff;
        }
        .caidananniu {
            height: 2.5rem;
            width: 6rem;
            border-radius: 3rem;
        }
        .caidananniu:hover {
            background-color: #000000;
            color: #fff;
            cursor: pointer;
        }