body {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100%;
}

form {
  display: flex;
  flex-direction: column;
}

form label {
  margin-top: 0.5rem;
  margin-bottom: 0.3rem;
}

form button {
  margin: 1rem 0;
}

#result {
  margin-top: 1rem;
}