body {
    font-family: 'Georgia', serif;
    background-color: <?php echo $backgroundColor; ?>;
    margin: 0;
}
header {
    background-image: url('https://picsum.photos/1600/500?floral');
    background-size: cover;
    background-position: center;
    padding: 60px;
    color: white;
    text-align: center;
    font-size: 2.5em;
}
nav {
    background-color: #7f8c8d;
    text-align: center;
    padding: 10px;
}
nav a {
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    font-weight: bold;
}
nav a:hover {
    background-color: #95a5a6;
}