[css-anchor-position] Whoops, separate the self and non-self logical axises, they weren't meant to be mixable.

Author: tabatkins

css-anchor-position-1/Overview.bs

@@ -490,13 +490,14 @@ Its syntax is:
 	| y-self-start | y-self-end | span-y-self-start | span-y-self-end
 	| span-all ]
 |
-	[ block-start | center | block-end | span-block-start | span-block-end
-	| self-block-start | self-block-end | span-self-block-start | span-self-block-end
-	| span-all ]
+	[ block-start | center | block-end | span-block-start | span-block-end | span-all ]
 	||
 	[ inline-start | center | inline-end | span-inline-start | span-inline-end
-	| self-inline-start | self-inline-end | span-self-inline-start | span-self-inline-end
 	| span-all ]
+|
+	[ self-block-start | self-block-end | span-self-block-start | span-self-block-end | span-all ]
+	||
+	[ self-inline-start | self-inline-end | span-self-inline-start | span-self-inline-end | span-all ]
 |
 	[ start | center | end | span-start | span-end | span-all ]{1,2}
 |