.about-us-image img {
    width: 100%;
}

.about-us-image {
    flex: 1;
}

.about-us {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: row;
    padding: 30px;
}

.about-us-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.about-us-child {
    margin: 20px;
}

.about-us-child > div {
    margin: 10px;
}

.about-us-child > div > h2 {
    font-size: 40px;
    margin: 10px;
}

/* for mobile */
@media only screen and (max-width: 425px) {
    .contents.about-us-page {
        padding: 0;
    }

    .about-us {
        flex-direction: column;
        padding: 20px;
    }

    .about-us-content {
        padding: 0px;
    }

    .about-us-child > div > h2 {
        font-size: 30px;
    }
}

/* for tablet */
@media only screen and (min-width: 426px) and (max-width: 1024px) {
    .about-us {
        flex-direction: column;
        padding: 20px;
    }

    .about-us-content {
        padding: 20px;
    }

    .about-us-child > div > h2 {
        font-size: 30px;
    }
}