<!DOCTYPE html>

<ol>
  <div>This list style should fallback to 'foo' in the parent tree scope</div>
  <div>A.</div>
  <div>B.</div>
  <div>C.</div>
</ol>

<ol>
  <div>This list style should fallback to 'foo' in the shadow tree scope</div>
  <div>X.</div>
  <div>Y.</div>
  <div>Z.</div>
</ol>