css

@property rule invalid or not supported

@property.*invalid.*syntax|@property.*not supported

Fixes

1.Use valid syntax string: '<color>', '<length>', '<number>'
2.Set initial-value and inherits properties
3.Check browser supports @property (no Firefox before 128)

custom-properties@propertysyntax

Related Errors

Container queries not supported

@container.*not.*supported|container-type.*unknown

•Add container-type: inline-size to parent
•Check browser version supports container queries

Container query: Invalid container name

container-name.*must be.*ident

•Use valid CSS identifier for container-name
•Don't use CSS keywords as container names

Container query: No matching container ancestor

@container.*no.*ancestor.*container

•Add container-type to an ancestor element
•Check container-name matches query