body {
    background-color: #fefefe;
    margin: 0;
    padding: 0;
    font-family: -apple-system,system-ui,BlinkMacSystemFont,"Segoe UI","Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif
}

section {
    width: 480px;
    margin: 5em auto;
    padding: 2em;
    background-color: #fffbe6;
    border: 1px solid #ffe58f;
    border-radius: .5em;
}

a:link, a:visited {
    color: #38488f;
    text-decoration: none;
}

.pre {
    white-space: pre;
    font-size: small;
}

@media (max-width:700px) {
    section {
        margin: 0 auto;
        width: auto
    }
}