body {
    /* width: var(--max-width);*/
    box-sizing: border-box;
    
    background-color: #ffffff;

    --link-background-color: #e8e5df;
}

@media screen and (min-width: 481px) {
    body {
         height: 934px;
    }
}
img {
    border-radius: 10px;
}

/*
header, main, footer {
    position: relative;
    margin: 20px auto 0 auto;
    max-width: var(--max-width);
    box-sizing: content-box;
    flex-flow: row nowrap;
    justify-content: space-between;
}*/

header, main, footer {
    margin: 20px auto 0 auto;
}

header {
    justify-content: center;
}

@media screen and (max-width: 480px) {
    #museum-logo {
        width: 60%;
    }
    #museum-logo img {
        width: 80%;
    }
}

#for-beginner a {
    content: url('/image/for-beginner-1.png');
}
    
@media screen and (max-width: 480px) {
    #for-beginner a {
        content: url('/image/for-beginner-m.png');
    }
}

header nav {
    display: flex;
    flex-direction: row;
}

@media screen and (max-width: 480px) {
    header nav {
        justify-content: flex-start;
    }
}
@media screen and (min-width: 481px) {
    header nav {
        justify-content: space-between;
    }
}

#main1 {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    background-color: var(--link-background-color);

    border-radius: 10px;
}
@media screen and (max-width: 480px) {
    #main1 {
        flex-direction: column;
    }
}


.main1-link {
    margin: 5px 5px 5px 5px;
}
@media screen and (max-width: 480px) {
    .main1-link img {
        width: calc(var(--max-width) * 0.8);
    }
}

#main2 {
    margin: 20px 0 0 0;
}

#heading {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 20px;
}

@media screen and (max-width: 480px) {
    #heading {
        flex-direction: column;
        align-items: baseline;
    }
}

h1 {
    font-size: 24px;
}

h2 {
    font-size: 12px;
}

#frame2 {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    flex-flow: row wrap;
    align-items: center;

    background-color: var(--link-background-color);
    border-radius: 10px;

    padding: 10px 10px 10px 10px;
}

@media  screen and (max-width: 480px) {
    .main2-img {
        width: 180px;
    }
    
}

footer nav {
    display: flex;
    flex-direction: row;
}
@media screen and (max-width: 480px) {
    footer nav {
        flex-direction: column-reverse;
    }
}


#footer-links {
    list-style: none;
    margin: 0 0 20px 0;
}

#footer-links li {
    font-size: 12px;
    margin: 0 0 0 10px;
}

@media screen and (min-width: 481px) {
    #footer-links {
        display: flex;
        flex-direction: row;
        justify-content: flex-start;
        flex-wrap: wrap;    
    }
    #footer-links li {
        display: inline-block;
    }

}

@media screen and (min-width: 481px) {
    #footer-links li::after {
        content: url(/image/footer-link-separator.png);
        padding: 0px 30px 0px 30px;
    }
}
@media screen and (max-width: 480px) {
    #footer-links li {
        margin: 5px 0 0 10px;
    }
}