body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}

header {
    background-color: #333;
    padding: 10px 0;
    text-align: center;
}

.logo img {
    max-width: 150px;
    display: block;
    margin: 0 auto;
}

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

nav ul li {
    margin: 0 15px;
}

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

main {
    text-align: center;
    padding: 50px;
}

.banner {
    background-color: #555;
    color: white;
    text-align: center;
    padding: 20px;
    font-size: 24px;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #333;
    color: white;
}