body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #0073e6;
    color: white;
    padding: 20px;
}

ul {
    list-style: none;
    padding: 0;
}

li {
    margin: 10px 0;
}

a {
    text-decoration: none;
    color: #0073e6;
    font-size: 18px;
}

a:hover {
    color: #005bb5;
}