body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #111;
  color: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

main {
  text-align: center;
  max-width: 480px;
  padding: 0 24px;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

p {
  color: #aaa;
  line-height: 1.5;
}