img{
    width: 100%;
}

.inner{
    width: 90%;
    max-width: 1000px;
    min-width: 320px;
    margin: 0 auto;
    font-family: "Noto Serif JP";
}

.top_maincontent{
    background:url('../img/background.jpg') lightgray 50% / cover no-repeat;
    padding: 20% 0 30px 0;
    background-size: cover;
    background-position: center;
}

.top_header{
    text-align: center;
    width: 416px;
    margin: 0 auto 200px;
}

.underpage{
    height: 30vh;
}

.underpage p{
    font-size: 24px;
}

.main-buttons{
    width: 720px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.main-buttons a.main-button{
    display: block;
    text-align: center;
    width: 220px;
    border-radius: 3px;
    background: #944B4B;
    color: #fff;
    padding: 10px;
    font-size: 12px;
}

.top_bottomcontent{
    background: #EDEDED;
    padding: 30px 0 20px;
}

.sub-buttons,
.sub-links{
    width: 470px;
    margin: 0 auto 30px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.sub-buttons a.sub-button{
    display: block;
    text-align: center;
    width: 220px;
    border-radius: 3px;
    color: #944B4B;
    border: 1px solid #944B4B;
    padding: 10px;
    font-size: 12px;
}

.sub-links a{
    font-size: 12px;
}


.footer{
    background: #944B4B;
    text-align: center;
    font-size: 10px;
    color: #fff;
    padding: 5px;
}


@media (max-width: 768px) {

    .inner,
    .main-buttons{
        width: 90%;
    }

    .main-buttons a.main-button,
    .sub-buttons a.sub-button{
        width: 90%;
        margin: 0 auto 20px;
    }

    .top_header {
        width: 70%;
        margin-bottom: 30vh;
    }

    .main-buttons {
        flex-direction: column;
        align-items: center;
    }

    .sub-buttons,
    .sub-links {
        width: 90%;
        flex-direction: column;
        align-items: center;
    }

    .sub-links a {
        margin-bottom: 10px;
    }
}