.join {
    width: 1170px;
}
.join section {
    padding-top: 60px;
    margin-bottom: 150px;
}
.mobileImg {
    display: none;
}
@media (max-width: 767px) {
    .join {
        width: 100%;
    }
    .join section {
        margin-bottom: 80px;
        padding-top: 0;
    }
    .join section img {
        width: 100%;
    }
    .pcImg {
        display: none;
    }
    .mobileImg {
        display: flex;
        flex-direction: column;
    }
}