body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: #333;
}

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

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 0;
    background: #004c99;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
}

nav ul li a:hover {
    background: #005bb5;
    border-radius: 5px;
}

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

footer {
    text-align: center;
    padding: 10px;
    background: #004c99;
    color: white;
    margin-top: 20px;
}