<!doctype html>
<title></title>
<link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
<style>
:root {
  color:black; background-color:white; font:10px/1 monospace;
}
ol::before, li::before {
  content: counters(list-item,".");
}
</style>
<ol start="9">
 <li style="counter-increment: list-item -2">
 <li style="counter-increment: list-item -2">
  <ol start="21">
   <li style="counter-increment: list-item -3">
   <li style="counter-increment: list-item -1">
   <li style="counter-increment: l