body {
  font-family: Arial, sans-serif;
  margin: 40px;
  background: #f9f9f9;
}

h1 {
  color: #333;
}

form {
  display: flex;
  flex-direction: column;
  width: 250px;
}

input, button {
  margin: 5px 0;
  padding: 8px;
}

#message {
  font-weight: bold;
  margin-top: 10px;
}