[csswg-drafts] Pull Request: [css-cascade][editorial] Clarify how @import behaves with invalid rules

andreubotella has just submitted a new pull request for https://github.com/w3c/csswg-drafts:

== [css-cascade][editorial] Clarify how @import behaves with invalid rules ==
This change also modifies the mention of @charset as an example of an
at-rule with restrictions on its relative ordering to replace it with
@namespace, since @charset is no longer a valid rule.

Closes #5313.


See https://github.com/w3c/csswg-drafts/pull/5358