body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(135deg, #667eea, #764ba2);
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  background: #ffffff;
  padding: 40px;
  border-radius: 10px;
  text-align: center;
  max-width: 400px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

h1 {
  margin-bottom: 10px;
}

button {
  margin-top: 20px;
  padding: 10px 20px;
  font-size: 16px;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background: #5a67d8;
}

#message {
  margin-top: 15px;
  font-weight: bold;
  color: #333;
}