[css-flexbox-1] Revert erroneous simplification. #5179 (comment)

fantasai · fantasai · commit 88cb91df1257 · 2021-06-09T16:33:14.000-07:00
diff --git a/css-flexbox-1/Overview.bs b/css-flexbox-1/Overview.bs
@@ -2817,8 +2817,10 @@ Resolving Flexible Lengths</h3>
 
 		<li>
 			<strong>Calculate <dfn>initial free space</dfn>.</strong>
-			Sum the outer [=target main sizes=] of all items on the line,
+			Sum the outer sizes of all items on the line,
 			and subtract this from the flex container's inner <a>main size</a>.
+			For frozen items, use their outer <a>target main size</a>;
+			for other items, use their outer <a>flex base size</a>.
 
 		<li>
 			Loop:
