body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin-top: 50px;
}

h1 {
    color: blue;
}

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

#message {
    margin-top: 20px;
    font-size: 24px;
    font-weight: bold;
}

.hidden {
    display: none;
}