Take advantage of the possibility to exclude certain UI elements from CSS reset

[oleq]

Provide a description of the task

#11451 brings a class that disables CSS reset on specific UI elements. There are some that could benefit from this to name a few:

• Replacement of the CKEditor 4's styles dropdown feature #5700 (style dropdown previews),
• headings (when configured using CSS classes),
• font size and family (?),
  • https://ckeditor.com/docs/ckeditor5/latest/api/module_font_fontsize-FontSizeConfig.html
• basically anything that has a preview and that preview is configured by the integrator (via CSS classes, inline styles, etc.)

[oleq]

Referring my comment from #11522:

This is not a silver bullet and does not replace web components in 100%. It's an improvement over what we had, though. Some styles will trickle down from parents because this is how inheritance works in CSS, there's no way to seal this up.

[CKEditorBot]

There has been no activity on this issue for the past year. We've marked it as stale and will close it in 30 days. We understand it may be relevant, so if you're interested in the solution, leave a comment or reaction under this issue.

[CKEditorBot]

There has been no activity on this issue for the past year. We've marked it as stale and will close it in 30 days. We understand it may still be relevant, so if you're interested in the solution, leave a comment or reaction under this issue.

[CKEditorBot]

We've closed your issue due to inactivity over the last year. We understand that the issue may still be relevant. If so, feel free to open a new one (and link this issue to it).