body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background-color: #f9f9f9;
}
h1 {
    color: #2c3e50;
}
nav ul {
    list-style-type: none;
    padding: 0;
}
nav ul li {
    margin-bottom: 10px;
}
footer {
    margin-top: 40px;
    font-size: 0.9em;
    color: #888;
}