body {
  background-color: #000;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  text-align: center;
}
.container {
  max-width: 600px;
  padding: 2rem;
}