body {
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  background-color: #f4f4f9;
}

h1 {
  color: #333;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  margin-top: 20px;
  cursor: pointer;
  border: none;
  border-radius: 5px;
  background-color: #4CAF50;
  color: white;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #45a049;
}

#message {
  margin-top: 30px;
  font-size: 18px;
  color: #555;
  opacity: 0;        
  transition: opacity 1s ease;
}