body {
  font-family: Arial, sans-serif;
  background-color: #f0f2f5;
  text-align: center;
  padding: 50px;
}

.container {
  background-color: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  max-width: 400px;
  margin: auto;
}

input {
  padding: 10px;
  width: 200px;
  font-size: 16px;
  margin-bottom: 10px;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #2ecc71;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #27ae60;
}

#message {
  font-size: 18px;
  margin-top: 20px;
}