body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
header, footer {
    background-color: #005f99;
    color: white;
    text-align: center;
    padding: 1em;
}
nav a {
    color: white;
    margin: 0 10px;
    text-decoration: none;
}
main {
    padding: 20px;
    text-align: center;
}
h2 {
    color: #005f99;
}
ul {
    list-style: none;
    padding: 0;
}
footer {
    position: fixed;
    bottom: 0;
    width: 100%;
}