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

h1 {
  font-size: 30px;
}

form {
  margin-top: 20px;
}

input {
  padding: 5px;
  margin: 10px;
}

button {
  padding: 10px 15px;
  background-color: #4CAF50;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #45a049;
}

#captchaDisplay {
  font-size: 20px;
  font-weight: bold;
  color: #333;
  letter-spacing: 2px;
}