/* 整体样式 */
.frame-box {
    margin: 0 auto; 
    max-width: 2560px;
}

/* 头部二级导航统一样式 */
.about_dropdown .dropdowns .dropdown_item h6 {
    font-size: 14px;
    line-height: 36px;
    color: #333;
}
.about_dropdown .dropdowns .dropdown_item:hover h6 {
    color: #f08200;
}
.about_dropdown {
    position: fixed;
    top: -100%;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 1px solid rgba(0,0,0,0.1);
    visibility: hidden;
    opacity: 0;
    transition: all .2s;
    z-index: 201;
}
.about_dropdown.show {
    visibility: visible;
    opacity: 1;
    top: 58px;
    transition: all .5s;
    box-shadow: 0 0px 5px rgba(0, 0, 0, 0.2);
}
.about_dropdown .dropdowns {
    margin: 0 28vw;
    height: 128px;
}
.about_dropdown .dropdowns .dropdown_item{
    text-align: center;
    margin-top: 40px;
    padding-bottom: 6px;
    cursor: pointer;
    width: 25%;
    float: left;
}
.about_dropdown .dropdowns .dropdown_item:hover{
    border-bottom: 2px solid #f08200;
    color: #f08200;
}
.about_dropdown .dropdowns .dropdown_item .background-box{
    background-repeat: no-repeat;
    margin: 0 auto;
    width: 44px;
    height: 44px;
}

.about_dropdown_mobile .dropdowns {
    height: 108px;
    margin: 0;
    margin-top: -25px;
}
.about_dropdown_mobile {
    visibility: visible;
    opacity: 1;
    top: 50px !important;
    transition: all .5s;
    box-shadow: 0 0px 5px rgba(0, 0, 0, 0.2);
}

.product_dropdown {
    position: fixed;
    top: 58px;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 1px solid rgba(0,0,0,0.1);
    border-bottom: 1px solid rgba(0,0,0,0.1);
    z-index: 9;
    display: inline-block;
}
.product_dropdown .dropdowns {
    margin: 0 32vw;
    display: flex;
    justify-content: space-around;
}
.product_dropdown .dropdowns .dropdown_item{
    text-align: center;
    margin-top: 10px;
    padding-bottom: 10px;
    cursor: pointer;
}
.product_dropdown .dropdowns .dropdown_item h6{
    padding-top: 10px;
}
.product_dropdown .dropdowns .dropdown:hover, .product_dropdown .dropdowns .dropdown.action{
    border-bottom: 2px solid #f08200;
}
.product_dropdown .dropdowns .dropdown_item img {
    width: 80px;
    height: 80px;
}