* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    color: #333;
}

nav {
    padding: 10px 0;
    margin-bottom: 20px;
    border-bottom: 1px solid #eee;
}

nav a {
    margin-right: 15px;
    color: #0066cc;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

footer {
    margin-top: 40px;
    padding-top: 10px;
    border-top: 1px solid #eee;
    color: #666;
}