Fallback content for iframe is not allowed

[iviWebStudio]

MDN URL

https://developer.mozilla.org/en-US/docs/Learn/HTML/Multimedia_and_embedding/Other_embedding_technologies

What specific section or headline is this issue about?

iframes in detail

What information was incorrect, unhelpful, or incomplete?

In the article we can see the followed content:

Fallback content .
In the same way as other similar elements like , you can include fallback content between the opening and closing <iframe></iframe> tags that will appear if the browser doesn't support the <iframe>. In this case, we have included a link to the page instead. It is unlikely that you'll come across any browser that doesn't support <iframe>s these days.

But there is no any definition about this usage in w3c https://www.w3.org/TR/2010/WD-html5-20101019/the-iframe-element.html

So I think, that html iframe element can't have child element.

What did you expect to see?

Removing info about fallback from the page.

Do you have any supporting links, references, or citations?

No response

Do you have anything more you want to share?

No response

MDN metadata

Page report details

• Folder: en-us/learn/html/multimedia_and_embedding/other_embedding_technologies
• MDN URL: https://developer.mozilla.org/en-US/docs/Learn/HTML/Multimedia_and_embedding/Other_embedding_technologies
• GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/learn/html/multimedia_and_embedding/other_embedding_technologies/index.md
• Last commit: 8039255
• Document last modified: 2023-04-15T05:00:08.000Z

[teoli2003]

That's correct, though the actual spec is there: https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-iframe-element