body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}
header {
    background: #2c3e50;
    color: white;
    padding: 20px;
    text-align: center;
}
.hero {
    text-align: center;
    padding: 50px;
}
button {
    padding: 10px 20px;
    background: #27ae60;
    color: white;
    border: none;
    cursor: pointer;
}
button:hover {
    background: #219150;
}