body {
  font-family: sans-serif;
  display: flex;
  height: 100vh;
  justify-content: center;
  align-items: center;
  background: #f0f0f0;
}
button {
  font-size: 1.2rem;
  padding: 1rem 2rem;
  background: #4f46e5;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}