.about {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 10px;
    color: rgb(89, 85, 85);
}

.about .about-title {
    font-size: 50px;
}

.about .about-title-img {
    width: 220px;
    object-fit: contain;
    margin-left: 330px;
    margin-top: 20px;
}
.about .about-banner-box{
    position: relative;
    width: 100%;
    height: 575px;
    margin-top: 30px;
}
.about .about-banner-box .banner-logo{
    position: absolute;
    right: 300px;
    top: 230px;
    width: 212px;
}
.about .about-banner-box .banner-background{
    width: 100%;
    height: 575px;
}
.certificate{
    padding: 98px 291px;
    color: rgb(113, 112, 113);
    font-size: 20px;
    line-height: 2; 
}
.certificate-list{
    margin-top: 140px;
}
.certificate-list .certificate-list-item{
    display: flex;
    padding-left: 60px;
    margin-bottom: 60px;
}
.certificate-img1{
    display: block;
    width:287px;
    height: 406px;
    padding-left: 130px;
}
.certificate-product1 {
    width: 383px;
    height: 226px;
    margin-top: 38px;
}
.certificate-img2 {
    display: block;
    width: 554px;
    height: 411px;
}
.certificate-product2 {
    width: 485px;
    height: 273px;
    margin-top: 48px;
}
.certificate-list .certificate-list-item .text-content {
    margin-left: 240px;
}
.text-content .text-box {
    display: inline-block;
    margin-top: 14px;
    width: 433px;
}
.certificate-list .certificate-list-item h1 {
    display: inline-block;
    font-size: 40px;
    color: rgb(89, 85, 85);
    font-weight: 400;
    margin-right: 14px;
    vertical-align: top;
}