 text-overflow: ellipsis;

            white-space: nowrap;

        }

        .layui-nav .layui-nav-item {
            position: relative;
            display: inline-block;
            vertical-align: middle;
            line-height: 50px;
        }

        body ul.layui-nav li.layui-nav-item a {
            display: block;
            transition: all .3s;
            -webkit-transition: all .3s;
        }

        .user_link {
            position: relative;
            display: inline-block;
         