body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #111;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.container {
  text-align: center;
}

button {
  margin-top: 20px;
  padding: 10px 20px;
  font-size: 1em;
  background-color: #444;
  color: white;
  border: none;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background-color: #666;
}