[css-position-3][editorial] Be less specific about conditions so they don't confusingly overlap with preceding ones. w3c#6580

Author: tabatkins

css-position-3/Overview.bs

@@ -892,17 +892,13 @@ Automatic Sizes of Absolutely-Positioned Boxes</h3>
 
 	<dl class=switch>
 		: If its [=self-alignment property=] in the relevant axis is ''align-self/stretch''
-		: If it is ''align-self/normal''
+		: Or if it is ''align-self/normal''
 			and the box is [=non-replaced=]
 			and has no ''inset/auto'' [=inset property|inset=] in the relevant axis
 		::
 			Its [=automatic size=] is its [=stretch-fit size=].
 
-		: If its [=self-alignment property=] in the relevant axis is not ''align-self/stretch''
-		: If it is ''align-self/normal''
-			and the box is [=replaced=]
-		: If it is ''align-self/normal''
-			and has at least one ''inset/auto'' [=inset property|inset=] in the relevant axis
+		: Otherwise
 		::
 			Its [=automatic size=] is its [=fit-content size=].
 	</dl>