I am making the following html. Here, a colleague advised that add the article element is appropriate because the part currently enclosed in the section is self-contained by itself.
...
<footer>
<!-- add <article> here-->
<section>
<h1>heading</h1>
</section>
<section>
<h1>heading</h1>
</section>
<!-- </article> -->
</footer>
Is it reasonable to add an article here? WHATWG says:
The article element represents a complete, or self-contained, composition in a document, page, application, or site and that is, in principle, independently distributable or reusable, e.g. in syndication.
If you enclose the footer content in an article, it must be redistributable, but it will not actually be redistributed (no such api).
Also, since the footer content isn't valid unless it is within the context of other page content, it is not known whether it is self-contained.
I read this SO Q&A, but I couldn't come up with a solution on how to handle the article element. I think that it is ambiguous how far self-contained can be included. Semantics are important for SEO and accessibility, but on the other hand I suffer from this ambiguity.
Is the content of such a footer self-contained and redistributable?