body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #222;
  color: #eee;
  text-align: center;
  padding: 50px;
}
.container {
  background: #333;
  border-radius: 10px;
  padding: 30px;
  max-width: 500px;
  margin: auto;
  box-shadow: 0 0 20px rgba(0,0,0,0.6);
}
button {
  margin-top: 20px;
  padding: 10px 20px;
  font-size: 1rem;
  background-color: #6c5ce7;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
button:hover {
  background-color: #a29bfe;
}