html {
  font-family: sans-serif;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  margin: 0 0.5em;
}

h1 {
  font-size: 1.4em;
}

h2 {
  font-size: 1.2em;
  margin: 1em 0 0.5em;
}

h2 + p, h2 + ul {
  margin-top: 0.5em;
}

code {
  background-color: rgba(0,0,0,0.04);
  padding: 0.1em 0 0.1em 0;
  border-radius: 3px;
}

pre {
  line-height: 1.3;
  width: 100%;
  white-space: pre-wrap;
  font-size: 9px;
}

div {
  margin: 0;
  padding: 0;
}

pre {
  line-height: 1.3;
  width: 100%;
}

.outline {
  outline: 1px solid black;
}

@media (min-width: 480px) {
  body {
    font-size: 16px;
    margin: 0 1em;
  }

  pre {
    font-size: 11px;
  }
}

@media (min-width: 768px) {
  body {
    margin: 2em 2em 2em 4em;
    max-width: 40em;
    font-size: 18px;
  }

  pre {
    font-size: 16px;
  }

  div.indent {
    margin-left: 3em;
  }
}