body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f5f5f5;
    color: #333;
}
header {
    background: #2c7be5;
    color: white;
    padding: 30px;
    text-align: center;
}
nav {
    background: #1b4f9c;
    padding: 10px;
    text-align: center;
}
nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}
section {
    padding: 20px 40px;
    background: white;
    margin: 20px auto;
    max-width: 900px;
    border-radius: 8px;
}
footer {
    text-align: center;
    padding: 20px;
    background: #ddd;
    margin-top: 40px;
}