/* General page styling */

body {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;

    font-family: system-ui, -apple-system, BlinkMacSystemFont,
                 "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    font-size: 18px;
    line-height: 1.6;

    color: #222;
    background: #fff;
}

/* Headings */

h1 {
    margin-bottom: 0.2em;
}

h2 {
    margin-top: 2em;
}

/* Links */

a {
    color: #0066cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Lists */

ul {
    padding-left: 1.5em;
}

/* Footer */

footer {
    margin-top: 3em;
    padding-top: 1em;

    border-top: 1px solid #ddd;

    font-size: 0.9em;
    color: #666;
}