.navtabBox{
    margin: 0 20px;
    height: 49px;
    border-bottom: 1px solid #f3f3f3;
}
.navtabBox li{
    float: left;
    width: 33%;
    line-height: 49px;
    font-size: 14px;
    color: #666;
    text-align: center;
}
.navtabBox li a {
    display: inline-block;
    margin: 0 5px;
    padding: 0 25px;
    width: auto;
    height: 47px;
    border-bottom: 2px solid #fff;
    cursor: pointer;
}
.navtabBox li a.cur{
    color: var(--themeColor);
    border-bottom: 2px solid var(--themeColor);
}