body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 50px;
}
button {
    margin: 10px;
    padding: 15px 30px;
    background-color: #4caf50;
    color: white;
    border: none;
    font-size: 16px;
    cursor: pointer;
}
button:hover {
    opacity: 0.8;
}