body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    background-color: #333;
    color: white;
    padding: 1rem;
    text-align: center;
}

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

header nav ul li {
    display: inline;
    margin: 0 1rem;
}

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

#hero {
    background: #f4f4f4;
    text-align: center;
    padding: 2rem;
}

#hero h2 {
    margin-bottom: 1rem;
}

#hero button {
    background-color: #007BFF;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 1rem;
}

#hero button:hover {
    background-color: #0056b3;
}

#ad-spot {
    margin: 2rem auto;
    text-align: center;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
}