header .page-title-overview {
    background-color: rgb(166 166 214 / 0.089);
    margin-top: 75px;
    width: 100%;
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

header .page-title-overview h1 {
    margin: 0 10vw 20px;
    font-size: 100px;
    color: #004e8ebe;
    text-align: center;
}

header .page-title-overview h3 {
    font-size: 18px;
    text-align: center;
    margin: 0 20vw;
    line-height: 1.6;
}

@media screen and (max-width: 840px) {

    /*ページタイトル*/
    header .page-title-overview {
        background-color: rgb(166 166 214 / 0.089);
        margin-top: 75px;
        padding: 0;
        width: 100%;
        height: 200px;

        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    header .page-title-overview h1 {
        align-items: center;
        text-align: center;
        padding: 0;
        margin-bottom: 20px;
        font-size: 50px;
        color: #004e8ebe;
    }

    header .page-title-overview h3 {
        align-items: center;
        text-align: center;
        padding: 0 5vw;
        font-size: 15px;
        color: #333;
    }
}