[css-grid-1] Grid is included in scrollable overflow area. #3638

Author: fantasai

css-grid-1/Overview.bs

@@ -905,6 +905,19 @@ Sizing Grid Containers</h3>
 	in the appropriate axis,
 	when the grid is sized under a <a>max-content constraint</a> (<a>min-content constraint</a>).
 
+<h3 id='overflow'>
+Scrollable Grid Overflow</h3>
+
+	Just as it is included in intrinsic sizing (see above),
+	the <a>grid</a> is also included
+	in a <a>grid container</a>’s <a>scrollable overflow region</a>.
+
+	Note: Beware the interaction with padding
+	when the <a>grid container</a> is a <a>scroll container</a>:
+	additional padding is defined to be added
+	to the <a>scrollable overflow rectangle</a>
+	as needed to enable ''place-content: end'' alignment of scrollable content.
+	See [[css-overflow-3#scrollable]]
 
 <!--
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@@ -917,7 +930,7 @@ Sizing Grid Containers</h3>
 -->
 
 <h3 id="overlarge-grids">
-Clamping Overly Large Grids</h3>
+Limiting Large Grids</h3>
 
 	Since memory is limited,
 	UAs may clamp the possible size of the <a>implicit grid</a>