.nav_list>div{
    margin-right: .3rem;
}
.erjifenlei_nav>ul>li{
    float: left;
    writing-mode: horizontal-tb;
    margin-right: .6rem;
    min-width: 1.7rem;
    max-width: 2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    
}