```
% pandoc
> ::: {.fence}
> that is
> not closed

okay
^D
2> [WARNING] Div at line 1 column 1 unclosed at line 5 column 1, closing implicitly.
<blockquote>
<div class="fence">
<p>that is not closed</p>
</div>
</blockquote>
<p>okay</p>
```