A serious drawback of CSS

Dario de Judicibus wrote:

OK. there are ways, but it looks to me that they are only tricks to move
around the problem. But the problem is still there. In my opinion, the only
practical solution would be to allow SRC attribute for html code too. We use
it already for images. Why not tags?

src for the img element as well as data for the object element
_reference_ an external resource. They do not _include_ something into
the HTML code with all the implications on e.g. CSS styling, rendering.

For XML-based languages there is XInlcude which is used to _include_
code. But popular browsers don't do XInclude, at least not for
text/html-labeled tag soup.
--
Johannes Koch
In te domine speravi; non confundar in aeternum.
(Te Deum, 4th cent.)