.copyright_certificate_list {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.copyright_certificate {
    padding-top: 50px;
    padding-bottom: 100px;
}

.copyright_certificate_list_item {
    margin-top: 50px;
    margin-bottom: 30px;
}


.copyright_certificate_list_item_tit {
    font-weight: bold;
    font-size: 16px;
    color: #222222;
    text-align: center;
    padding-top: 30px;
    padding-bottom: 20px;
}

.copyright_certificate_list_item_img {
    width: 560px;
    height: 438px;
    box-shadow: 10px 11px 10px 0px rgba(0, 0, 0, 0.15);
}

.copyright_certificate_list_item_text {
    width: 258px;
    font-weight: 400;
    font-size: 12px;
    color: #666666;
    line-height: 22px;
    text-align: center;
    margin: 0 auto;
}

.page_box {
    margin-top: 10px;
}

.banner_box {
    height: 500px;
    background-image: url(../img/copyright_bg.png);
    background-position: top center;
    background-size: auto 500px;
}

@media screen and (max-width: 750px) {

    .copyright_certificate {
        padding: .5rem .3rem;
    }

    .copyright_certificate_list {
        justify-content: center;
    }

    .copyright_certificate_list_item_img {
        width: 5.6rem;
        height: 4.38rem;
        box-shadow: .1rem .11rem .1rem 0px rgba(0, 0, 0, 0.15);
    }

    .copyright_certificate_list_item {
        margin-top: .6rem;
        margin-bottom: .2rem;
    }

    .copyright_certificate_list_item_tit {
        padding-top: .28rem;
        padding-bottom: .3rem;
    }

    .page_box {
        margin-top: .6rem;
        padding-bottom: .5rem;
    }

    .banner_box {
        height: 3.2rem;
        background-size: auto 3.2rem;
    }
}