body {
    font-family: 'Lucida Sans', sans-serif;
    margin: 0;
    padding: 0;
    background-color: <?php echo $backgroundColor; ?>;
}
.wrapper {
    max-width: 1000px;
    margin: 0 auto;
}
header {
#background-image: url('https://picsum.photos/1200/400');
    background-size: cover;
    background-position: center;
    background-color: #333;
    padding: 20px;
    text-align: center;
    color: white;
}
nav {
    display: flex;
    justify-content: space-around;
    padding: 10px 0;
    background-color: #444;
}
nav a {
    color: white;
    padding: 10px;
    text-decoration: none;
}
nav a:hover {
    background-color: #666;
}