Re: [csswg-drafts] [css-images-4] Add `light-dark-image()`, or generalize `light-dark()` for images too? (#12513)

`light-dark()` is resolved at computed value time, right? So light-dark(none, none) won't round trip if it computes to `none`.

What if you have a registered custom property syntax `"none|<image>"`, where you want `none` to mean something else than an empty/missing image?


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Received on Thursday, 26 March 2026 10:35:01 UTC