mn

http://image.uczzd.cn/10129986679866437816.jpg?id=0&from=export

https://www.cnblogs.com/ityouknow/p/7089177.html

<style type="text/css">

 #myMenuid {
    border-top: 3px solid #108ead;
    padding-top: 1px;
    box-shadow: 0px 2px 10px 0px rgba(0,0,0,0.1), 0 1px rgba(0,0,0,0.1);
    background: #fafafa;
    padding-bottom:10px; 

 }

    #myMenuid li {
        border-radius: 0;
        color: #0e90d2;
        background: 0 0;
     
    }
    
    #myMenuid   a{
        display: inline-block;
        padding: 0 6px;
        height: 34px;
        color: #757575;
        font-weight: 500;
        -moz-border-radius: 4px;
        -webkit-border-radius: 4px;
        border-radius: 4px;
        font-size: 16px;
        text-decoration: none;
    }

     .el-menu--horizontal .el-menu-item {
    cursor: default;
    }
    .el-menu-item.is-active {
     color: #409EFF; 
}
</style>