body {
  background-color: #fafafa;
}

.content-narrow {
  max-width: 720px;
}

main h1 {
  margin-bottom: 0.75rem;
}

main h2 {
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

main p,
main li {
  line-height: 1.6;
}