body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #222;
    background-color: #f9f9f9;
}
header {
    background-color: #003366;
    color: white;
    padding: 20px 0;
    text-align: center;
}
header h1 {
    margin: 0;
    font-size: 2em;
}
header nav ul {
    list-style: none;
    padding: 0;
}
header nav ul li {
    display: inline;
    margin: 0 10px;
}
header nav ul li a {
    color: white;
    text-decoration: none;
}
main {
    padding: 20px;
    text-align: center;
}
footer {
    text-align: center;
    padding: 10px;
    background-color: #eee;
}