Re: [csswg-drafts] [css-gaps-1]: Change the initial value for insets property to be 0 (#13137)

> I could see perhaps assigning keywords to "-50% minus the width of the perpendicular decoration" and "-50% plus the width of the perpendicular decoration"

I had this thought under the assumption that such keywords could be desugared to `calc(-50% - perpendicular_rule_width)` at computed-value time. But it was pointed out to me in an internal discussion that that's not necessarily the case: `perpendicular_rule_width` can be a list value, and we don't know until paint time which value from that list to use. That doesn't make it *impossible*, but it does complicate things.

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Received on Friday, 6 March 2026 18:58:55 UTC