html {
  color: #222;
  background: #fff;
  font:
    100%/1.6 system-ui,
    sans-serif;
}
body {
  max-width: 42rem;
  margin: auto;
  padding: 1.5rem;
}
a {
  color: #245744;
  text-underline-offset: 0.2em;
}
h1 {
  line-height: 1.2;
}
h2 {
  margin-top: 1.5rem;
  font-size: 1.2rem;
}