body {
    font-family: Arial, sans-serif;
    margin: 0;
}

header {
    background-color: #003366;
    color: #fff;
    padding: 20px;
    text-align: center;
}

h1 {
    margin: 0;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline-block;
    margin-right: 20px;
}

nav ul li:last-child {
    margin-right: 0;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

main {
    margin: 20px;
    text-align: center;
}

ul {
    list-style-type: none;
}

ul li a {
    color: #003366;
}

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

footer img {
    margin: 10px;
    width: 50px;
}