body {
    font-family: monospace, monospace;
    background: #ffffff;
    color: #000000;
    padding: 2rem;
    max-width: 800px;
    margin: auto;
    line-height: 1.6;
}
a {
    color: #0000ee;
    text-decoration: none;
}
a:hover,
a:focus {
    text-decoration: underline;
}
nav ul {
    list-style: none;
    padding: 0;
}
nav li {
    margin-bottom: 0.5rem;
}
pre {
    background: #000000;
    color: #f8f8f8;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
}
@media (max-width: 500px) {
    body {
        padding: 1rem;
    }
}