chromium/content/test/data/accessibility/display-locking/non-activatable.html

<!--
@BLINK-ALLOW:offscreen
@AURALINUX-ALLOW:visible
-->
<div>
  <div id="locked" style="content-visibility: hidden">
    <div>child</div>
    <div id="nested" style="content-visibility: hidden">nested locked element!</div>
    <div id="activatable" hidden=until-found>activatable locked element</div>
  </div>
</div>