bb-struct

<p style="color:red" id="bbid" data-x="y" class="bbc">styled</p><h1>H1head</h1><blockquote>bq</blockquote><table><tr><td>cell</td></tr></table><a href="https://example.com/bbprobe" target="_blank" rel="noopener">lnk</a><details><summary>sum</summary>d</details><bbunknown>unk</bbunknown>