.main {
    height: 960px;
}

.mainLogo {
    text-align: center;
    padding-top: 100px;
}

.about-us-content-box {
    width: 1400px;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: space-evenly;
    margin: 0 auto;
}

.mainContent {
    padding-right: 40px;
    width: 800px;
    height: 419px;
    font-size: 22px;
    font-family: Microsoft YaHei, Microsoft YaHei-Regular;
    font-weight: 400;
    text-align: justifyLeft;
    color: #212121;
    line-height: 36px;
    margin-top: 98px;
}

.about-us-content-img-box {
    margin-top: 98px;
}
.about-us-content-img-box  img{
    width: 600px;
}

.column {
    background-image: url('../images/plan.png');
}

#popBack {
    height: 1665px;
}