body {
  background: #f7f7f7;
  margin: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#container {
  text-align: center;
  background: #fff;
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

#mensaje {
  margin-bottom: 20px;
  font-size: 24px;
  color: #314e6d;
}

button {
  padding: 10px 30px;
  background: #314e6d;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background: #466fa1;
}