body {
  max-width: 42rem;
  margin: 3rem auto;
  padding: 0 1rem;
  font-family: system-ui, sans-serif;
  line-height: 1.6;
  color: #111;
  background: #fff;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

a {
  color: inherit;
}