body {
    font-family: Arial, sans-serif;
    margin: 50px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}

.hidden {
    display: none;
}

.copy-text {
    margin-top: 20px;
    padding: 10px;
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    cursor: pointer;
}