body {
  max-width: 42rem;
  margin: 4rem auto;
  padding: 0 1rem;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: #111;
}

h1 {
  margin-bottom: 0.5rem;
}

a {
  color: #0055cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}