.section-intros{
    max-width: 800px;
}
.rows{
    display: flex;
    justify-content: center;
}
.img-fluid-zhirong{
    max-width: 66%;
    margin-left: 20%;
}

.img-fluid-zhirong2{
    max-width: 100%;
}

.img-fluid-zhirong3{
    max-width: 60%;
}

.img-fluid-zhirong4{
    max-width: 100%;
}
.img-fluid-zhirong5{
    height: 510px;
    /* 使用背景图片 */
    background-image: url('your-image-url.jpg');
    background-size: cover; 
    /* 调整背景图片的位置 */
    background-position: center center; 
    background-repeat: no-repeat;
}

.testimonial__item{
    background-color: #fff;
}
.testimonial__img{
    width: 400px;
    /* height: 100px; */
    border-radius: 50%;
    margin-bottom: 20px;
}

#gongdianquan{
    margin: auto;
}