body {
  margin: 2em auto;
  max-width: 70ch;

  font-family: system-ui, sans-serif;
  font-size: 1.2rem;
  color: #111;
}

h1 {
  text-align: center;
}

h2 {
  font-size: 1.4em;
  padding: 0.2em 0;
  border-bottom: 3px solid #eee;
}

code {
  background-color: #eee;
  padding: 0 1ch;
}

pre {
  background-color: #eee;
  padding: 1ch;
}

pre > code {
  all: unset;
}