body {
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 20px;
  background: #f9f9f9;
}

h2, h3 {
  color: #333;
}

input, button {
  padding: 10px;
  margin: 8px;
  font-size: 16px;
}

button {
  cursor: pointer;
  background: #007BFF;
  color: white;
  border: none;
  border-radius: 5px;
}

button:hover {
  background: #0056b3;
}

#qrcode {
  margin-top: 20px;
}