body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
    color: #333;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 20px;
    text-align: center;
    border-radius: 8px;
}

nav {
    background-color: #34495e;
    padding: 10px;
    text-align: center;
    border-radius: 8px;
    margin: 10px 0;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
}

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

main {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    margin: 10px 0;
}

footer {
    text-align: center;
    padding: 10px;
    color: #777;
}