body {
  font-family: system-ui, sans-serif;
  line-height: 1.5;
  margin: 2rem auto;
  max-width: 40rem;
  padding: 0 1rem;
  color: #222;
  background: #fafafa;
}

main {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1.5rem;
}

a {
  color: #0b57d0;
}