body {
    font-family: Tahoma, sans-serif;
    background: #f7f7f7;
    text-align: center;
    padding: 50px;
}
button {
    padding: 10px 20px;
    margin: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    font-size: 16px;
    cursor: pointer;
}
button:hover {
    background-color: #3e8e41;
}