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

header {
    background: #333;
    color: white;
    padding: 20px 0;
    text-align: center;
}

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

header nav ul li {
    display: inline-block;
    margin: 0 10px;
}

header nav ul li a {
    color: white;
    text-decoration: none;
}

.hero {
    text-align: center;
    padding: 50px 20px;
    background: #007BFF;
    color: white;
}

footer {
    text-align: center;
    padding: 20px;
    background: #333;
    color: white;
}