[csswg-drafts] [css-gaps-1] "Extended between" behavior for rule-visibility-items (#13773)

kbabbitt has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-gaps-1] "Extended between" behavior for rule-visibility-items ==
This was something that came up in [#13477](https://github.com/w3c/csswg-drafts/issues/13477#issuecomment-4087721073):

@mirisuzanne:
> Looking at these demos, I'm realizing I would often want a secret third thing – which is only the lines drawn 'between' but extended anywhere there's content on _either_ side. But not any of the new lines that would be drawn for 'around'. 

@kbabbitt:
> @mirisuzanne Is this what you have in mind?
> 
> <img width="1138" height="375" alt="Image" src="https://github.com/user-attachments/assets/a0656f10-b689-4e03-a53d-b48c81afb077" />
> 
> Or maybe only extending the segments where they follow spanners?
> 
> <img width="1136" height="373" alt="Image" src="https://github.com/user-attachments/assets/601147c8-eb1d-45e8-b0a7-e743daf871c6" /> 

@mirisuzanne:
> Yeah, maybe it's the latter - between, but following spanners. But now I'm pretty suspicious of my own instincts, and wonder how much any one of these will be obviously used more than others. If there's not a clear single best option for a most common case, the question is really about consistency with multicol vs _visible-by-default_.

The default behavior question was covered in 13477; I wanted to capture the above idea separately as a potential future addition.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/13773 using your GitHub account


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Received on Monday, 6 April 2026 22:38:37 UTC