[css-grid] Clarifications to min-size contribution definition. #507

Author: fantasai

css-grid/Overview.bs

@@ -3856,11 +3856,11 @@ Resolve Intrinsic Track Sizes</h3>
 					Otherwise,
 					set its <a>base size</a>
 					to the maximum of its items’ <dfn noexport>min-size contributions</dfn>:
-					the value specified by its respective 'min-width' or 'min-height' properties
+					the outer size that would result from assuming
+					an item’s 'min-width' or 'min-height' value
 					(whichever matches the relevant axis)
-					if the specified size
-					('width' or 'height', whichever matches the relevant axis)
-					is ''width/auto'',
+					as its specified size
+					if its specified size ('width' or 'height', whichever matches the relevant axis) is ''width/auto'',
 					or else the item’s <a>min-content contribution</a>.
 
 					Note: For items with a specified minimum size of ''min-width/auto'' (the initial value),