.section-title{
    font-size: 34px;
    text-align: center;
    padding-bottom: 40px;
}
.am-nav-tabs{
    border-bottom: none;
    border-top: 1px solid #ddd;
}
.am-nav-tabs > li{
    padding: 0;
    width: 130px;
    height: 50px;
    background: #fff;
    font-size: 14px;
}
.am-nav-tabs > li > a{
    text-align: center;
    display: block;
    color: #666;
    margin: 0;
    line-height: 50px;
    padding: 0;
}
.am-nav-tabs > li.am-active > a, .am-nav-tabs > li.am-active > a:hover, .am-nav-tabs > li.am-active > a:focus {
    border-left: 0;
    border-right: 0;
    border-top: 3px solid #3eb76a;
    color: #3eb76a;
}
.am-tabs-bd-ofv{
    border: 0;
}
.item-case{
    height: 270px;
    background: red;
    margin: 20px 5px;
}