Sebastian Zartner

As [mentioned in my comment there](https://github.com/w3c/csswg-drafts/issues/7033#issuecomment-1149561330). The `CSSContainerRule` would have two attributes reflecting the name and the query. Using those, `matches` can be a getter there as well. So, `matches`...

Btw. matching a container query against a specific element is covered by #6205. Sebastian

I totally disregarded that `@container` rules are special in that whether they match depends on the elements matched by the style rules' selectors within them. So you're right, @emilio, a...

I'd say `.matches` should always work in the context the related at-rule is in. I.e. if a media rule is disconnected from a document, conditions _requiring_ a document to properly...

We're obviously diving deep into the Syntax spec. here and are side-tracking with `@nest`. But here's how I interpret this. > There is also this part in [CSS Syntax 3...

As @tabatkins [wrote earlier](https://github.com/w3c/csswg-drafts/issues/5969#issuecomment-776373782), the declarations inside `@page` are all descriptors. So regarding custom properties, there are two points that speak _against_ them applying in this context: 1. As their...

For what it's worth, @emilio already [implemented `.containerName` and `.containerQuery`](https://bugzilla.mozilla.org/show_bug.cgi?id=1787173) for Gecko a few days ago. Sebastian

@booluw wrote: > Great stuff, but won't this increase the overall parse time of the styles. How is the performance metrics? As I understand it, the parse time doesn't increase...

@jsnkuhn Note that the idea behind this feature is to allow manipulating _existing_ images. Your example obviously is meant to _create_ one, which I believe is out of scope of...

Btw. here are some name suggestions for rule and function name combinations: - `@image-change` / `change-image()` - `@image-edit` / `edit-image()` - `@image-modification` / `modify-image()` - `@image-alternation` / `alter-image()` - `@image-adjust`...