.column-banner img {
    width: 100%;
}

.hot-produce {
    padding-top: 56px;
    padding-bottom: 19px;
    font-size: 18px;
    font-family: Source Han Sans SC;
    font-weight: bold;
    line-height: 26px;
    color: #030303;
    opacity: 1;
}

.column-content img {
    width: 100%;
}

.practice-margin {
    margin-bottom: 20px;
}

.column-courses {
    display: flex;
    justify-content: space-between;
}

.column-courses img {
    width: 331px;
    height: 210px;
    /* margin-right: 19.5px; */
}

.margin-b140 {
    margin-bottom: 140px;
}