Minutes Telecon 2021-05-12

Resolved: Confirm that abspos elemetns do not create column boxes and this adjacent spanners separated by abspos will collapse margins (Issue #6265: Definition of adjacent spanners, when to create column boxes)
Resolved: Add the current interop situation to the spec [Out of flow positioned elements affect the height of the multicol container] (Issue #6279: Should contained out-of-flow descendants affect column balancing?)
Resolved: Remove at-risk label for style containment (Issue #6272: Remove “at-risk” for style containment)
Resolved: Style containment will be required in order to establish a queryable container (Issue #6213: Need style containment for container queries)
Resolved: Have unknown @supports expressions evaluate to false for all @support rules (Issue #6175: What is the migration path for Container Queries?)
Resolved: Create a container function that can test if @supports checks for a particular container query (Issue #6175)
Resolved: Drop lab from color() (Issue #5887: Consider removing lab(…) and lch(…) syntax and using color(lab …) and color(lch …) only)
Resolved: Make -webkit-image-set a parse time alias to image-set (Issue #6285: Consider making -webkit-image-set a parse-time alias to image-set)