"Style rules defined on an element inside multiple nested container queries apply when all of the wrapping container queries are true for that element." https://drafts.csswg.org/css-contain-3/#container-rule
Created attachment 452721 [details] Patch
This patch modifies the imported WPT tests. Please ensure that any changes on the tests (not coming from a WPT import) are exported to WPT. Please see https://trac.webkit.org/wiki/WPTExportProcess
Committed r290257 (?): <https://commits.webkit.org/r290257> All reviewed patches have been landed. Closing bug and clearing flags on attachment 452721 [details].
<rdar://problem/89248832>