Post #2375671

The `var()` reference can only be used for the value, not for the "feature" (`inline-size`, `orientation`, etc) or the entire query. We need to know what feature we are querying in order to find a container, so there's nothing to resolve against at that point. These will Not Work: ```css .container { --medium: (inline-size > 30em); --axis: inline-size; } @container var(--medium) { … } @container (var(--axis) > 30em) { … } ``` For those, we would still need "custom media queries".