body {
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 2rem;
  background: #f5f5f5;
}

h1 {
  color: #0d6efd;
}

input {
  padding: 0.5rem;
  font-size: 1rem;
  margin: 0.5rem;
  width: 200px;
}

button {
  padding: 0.6rem 1.5rem;
  border: none;
  border-radius: 10px;
  background: #0d6efd;
  color: white;
  font-size: 1rem;
  cursor: pointer;
}

#qrcode {
  margin-top: 2rem;
}