body {
  margin: 40px;
  font-family: ui-monospace, sfmono-regular, menlo, monaco, consolas, "liberation mono", "courier new", monospace;
  font-size: 16px;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

main { max-width: 80ch; }
pre { white-space: pre-wrap; margin: 0; }