I used to think that all block-level elements can contain block elements & inline elements.
In [reference.sitepoint.com/html/h1, [URL="http://reference.sitepoint.com/html/h6"]reference.sitepoint.com/html/h6 , [URL="http://reference.sitepoint.com/html/p"]reference.sitepoint.com/html/p](http://reference.sitepoint.com/html/h1) etc. it's mentioned:
This element may contain any text content, but it can’t include any block-level elements: only inline or phrase elements can be included.
When I checked, I saw that <h1>, <h2>....<h6>, <p>, <li> inside <dir> or <menu> cannot contain block-level elements.
Are there any other block elements that cannot contain block elements?