[csswg-drafts] [scroll-animations] The selector() function vs. similar cases (#5166)

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

== [scroll-animations] The selector() function vs. similar cases ==
Not necessarily a spec issue, I'm just wondering why the `source` descriptor currently accepts `selector(<id-selector>)`, rather than just `<id-selector>`.

I'm not implying that it doesn't make sense or that it's somehow very bad, I just want to ensure that we're as consistent across specs as we can be. In particular, [nav-up (etc)](https://drafts.csswg.org/css-ui-4/#nav-dir) accepts an `<id>` directly. (Are there other similar cases)?



Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/5166 using your GitHub account