.banner {
    height: 6rem;
    position: relative;
}

.banner img {
    display: block;
    width: 100%;
    height: 100%;
}

.tab-box {
    display: flex;
    align-items: center;
    justify-content: center;
    height: .8rem;
    font-size: .28rem;
    font-family: SourceHanSansCN;
    font-weight: 400;
    color: #333333;
    background: #FFFFFF;
    box-shadow: 0px 8px 14px 0px rgba(63, 63, 63, 0.1);
}

.tab-item {
    padding: 0 .7rem;
    cursor: pointer;
    border-right: 1px solid #BBBBBB;
}

.tab-item.active {
    color: #FE0605;
}

.tab-item:last-child {
    border: 0;
}


.certificate-con {
    display: flex;
    padding: .6rem 0;
    flex-wrap: wrap;
}

.one-certificate-item {
    width: 32%;
    min-height: 6.6rem;
    padding: .17rem;
    cursor: pointer;
    margin-right: .27rem;
    margin-bottom: .4rem;
    border: 3px solid #DDDDDD;
}

.one-certificate-item:nth-child(3n) {
    margin-right: 0;
}

.certificate-img {
    display: block;
    height: 5.5rem;
    border: 3px solid #DDDDDD;
}

.certificate-name {
    display: flex;
    align-items: center;
    justify-content: center;
    height: .86rem;
    font-size: .26rem;
    font-family: SourceHanSansCN;
    font-weight: bold;
    color: #333333;
    line-height: .36rem;
}

.one-certificate-item:hover {
    background: #FE0605;
}

.one-certificate-item:hover .certificate-name {
    color: #FFFFFF;
}

.read-more {
    display: block;
    width: 3rem;
    font-size: .22rem;
    font-family: SourceHanSansCN;
    font-weight: 500;
    color: #333333;
    text-align: center;
    line-height: .36rem;
    margin: 0 auto .5rem;
    cursor: pointer;
}

@media screen and (max-width: 769px) {


    .tab-box {
        font-size: 0.14rem;
        text-align: center;
    }
    .certificate-con {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100%;
        padding: .6rem 0.25rem;
        flex-wrap: wrap;
        flex-direction: column;
    }

    .one-certificate-item {
        margin-right: 0;
        width: 75%;
        min-height: 4rem;
    }
}