[css-cascade-5] Clarify note on @layer between @import/@namespace rules #6522

Author: mirisuzanne

css-cascade-5/Overview.bs

@@ -1619,9 +1619,9 @@ Declaring Without Styles: the ''@layer'' statement at-rule</h5>
 	(after the ''@charset'' rule, if any)
 	as well as everywhere ''@layer'' [=block at-rules=] are allowed.
 
-	Note: They are not allowed between (or intermixed with) ''@import'' and ''@namespace'' rules,
-	and such interleaved ''@layer'' rules will cause any subsequent ''@import'' or ''@namespace'' rules
-	to be ignored.
+	Note: Empty ''@layer'' rules are not allowed between ''@import'' and ''@namespace'' rules.
+	Any ''@layer'' rules that comes after an ''@import'' or ''@namespace'' rule
+	will cause any subsequent ''@import'' or ''@namespace'' rules to be ignored.
 
 	Unlike the [[#layer-block|block syntax]],
 	multiple comma-separated layer names can be provided in this syntax,