[css-grid] Verify that the reference to replaced elements really means that, and shouldn't apply to anything with an 'aspect-ratio'. Also slightly rearrange/rewrite for clarity.

Author: tabatkins

css-grid-1/Overview.bs

@@ -1107,18 +1107,27 @@ Grid Items</h2>
 	vary by their [[css-align-3#self-alignment|self-alignment values]]:
 
 	: ''align-self/normal''
-	:: If the grid item is either non-replaced--
-		or is replaced but has no intrinsic aspect ratio and no intrinsic size in the relevant dimension--
-		use the width calculation rules for non-replaced boxes
-		as defined in <a href="https://www.w3.org/TR/CSS2/visudet.html#blockwidth">CSS2.1 § 10.3.3</a>.
-
-		Otherwise, if the grid item has an intrinsic ratio or an intrinsic size in the relevant dimension,
+	:: 
+		If the grid item is a [=replaced element=] with an intrinsic size in the relevant dimension
+		(or with an aspect ratio and an intrinsic size in the other dimension)
 		the grid item is sized as for ''align-self: start''
-		(consistent with the width calculation rules for block-level replaced elements in <a href="https://www.w3.org/TR/CSS2/visudet.html#block-replaced-width">CSS2.1 § 10.3.4</a>).
+		(consistent with the width calculation rules for block-level replaced elements in [[CSS2/visudet#block-replaced-width]]).
+
+		Otherwise,
+		use the [=inline size=] calculation rules for non-replaced boxes
+		(defined in [[CSS2/visudet#blockwidth]],
+		and modified by the rules for handling the 'aspect-ratio' property
+		when resolving ''width/auto'' sizes in [[CSS-SIZING-4]]).
+
 	: ''align-self/stretch''
-	:: Use the width calculation rules for non-replaced boxes, as defined in <a href="https://www.w3.org/TR/CSS2/visudet.html#blockwidth">CSS2.1 § 10.3.3</a>.
+	:: 
+		Use the [=inline size=] calculation rules for non-replaced boxes
+		(defined in [[CSS2/visudet#blockwidth]],
+		and modified by the rules for handling the 'aspect-ratio' property
+		when resolving ''width/auto'' sizes in [[CSS-SIZING-4]]).
 
 		Note: This may distort the aspect ratio of the item, if it has one.
+		
 	: all other values
 	:: Size the item as ''width/fit-content''.