body {
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    line-height: 1.4;
    font-size: 16px;
    padding: 0 10px;
    margin: 50px auto;
    max-width: 650px;
}

#answer {
    max-width: 25em;
    margin: 15px 0;
    max-height: 400px;
    overflow-y: auto;
}

#answer ul {
    padding-left: 1em;
}

#answer h4 {
    margin-top: 0;
}

.login {
    position: absolute;
    right: 5px;
    top: 0;
}

footer {
    position: absolute;
    left: 5px;
    bottom: 0;
}

body.dark-mode {
    background-color: #000;
    color: #fff;
}

body.dark-mode input[type="text"] {
    background-color: #000;
    color: #fff;
    border: 1px solid #555;
}

body.dark-mode a {
    color: #4da8da;
}

body.monospace,
body.monospace input[type="text"],
body.monospace a {
    font-family: "Courier New", Courier, monospace;
}

body.sans,
body.sans input[type="text"],
body.sans a {
    font-family: sans-serif;
}