.jz_img {
    margin-top: 30px;
    display: flex;
    width: 80%;
    height: 300px;
    justify-content: space-around;
    text-align: center;
}

.jz_img div {
    width: calc(300px - 30px);
    height: 250px;
    margin-right: 10px;
    flex: 1;
}

.explain {
    width: 100%;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    font-family: 宋体;
    padding-top: 15px;
    height: 25px !important;
    text-align: center;
}

.jz_img_sub {
    width: 100%;
    height: 100%;
}