#registerForm {
  max-width: 450px;
  margin: 2rem auto;
  padding: 2rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  background-color: #fafafa;
}

.hint {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.85rem;
  color: #666;
}