body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f7f6;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #2c3e50;
    color: #ffffff;
    text-align: center;
    padding: 2rem 1rem;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1rem;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #eee;
}

ul li a {
    text-decoration: none;
    color: #3498db;
    font-weight: bold;
    font-size: 1.1rem;
}

ul li a:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    margin-top: 2rem;
    padding: 1rem;
    font-size: 0.9rem;
    color: #777;
}