body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f5f5;
}

.container {
  text-align: center;
  margin-top: 100px;
}

h1 {
  color: #222;
}

button {
  padding: 12px 20px;
  border: none;
  background: black;
  color: white;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
}