[css-grid] Improve sizing of grid containers a bit.

--HG--
extra : rebase_source : 75b712bbc25c32b54a9dbf6c8a15bd9feab3b092

Author: fantasai

css-grid/Overview.bs

@@ -542,10 +542,13 @@ Grid Containers: the <a value>grid</a> and ''inline-grid'' 'display' values</h3>
 
 	A <i>grid container</i> is sized
 	using the rules of the formatting context in which it participates.
-	In a <a>block formatting context</a>,
-	a <a>grid container’s</a> ''auto'' block size
-	is its max-content block size.
-	<span class="issue">The block layout spec should define this.</span>
+	As a block-level box in a <a>block formatting context</a>,
+	it is sized like any other block-level box that establishes a formatting context,
+	and as an inline-level box in an inline formatting context
+	it is sized as an atomic inline-level box (such as an inline-block).
+	In both inline and block formatting contexts,
+	the <i>grid container</i>’s ''auto'' block size is its max-content size.
+	<span class="issue">The block layout spec should define this?</span>
 
 	Grid containers are not block containers,
 	and so some properties that were designed with the assumption of block layout

css-grid/Overview.html

@@ -701,10 +701,13 @@ <h3 class="heading settled heading" data-level=3.1 id=grid-containers><span clas
 
 <p>	A <a data-link-type=dfn href=#grid-container title="grid container">grid container</a> is sized
 	using the rules of the formatting context in which it participates.
-	In a <a data-link-type=dfn title="block formatting context">block formatting context</a>,
-	a <a data-link-type=dfn href=#grid-container title="grid container’s">grid container’s</a> <a class=css data-link-type=maybe href=#valuedef-auto title=auto>auto</a> block size
-	is its max-content block size.
-	<span class=issue id=issue-8669c070><a class=self-link href=#issue-8669c070></a>The block layout spec should define this.</span>
+	As a block-level box in a <a data-link-type=dfn title="block formatting context">block formatting context</a>,
+	it is sized like any other block-level box that establishes a formatting context,
+	and as an inline-level box in an inline formatting context
+	it is sized as an atomic inline-level box (such as an inline-block).
+	In both inline and block formatting contexts,
+	the <a data-link-type=dfn href=#grid-container title="grid container">grid container</a>’s <a class=css data-link-type=maybe href=#valuedef-auto title=auto>auto</a> block size is its max-content size.
+	<span class=issue id=issue-839d056f><a class=self-link href=#issue-839d056f></a>The block layout spec should define this?</span>
 
 <p>	Grid containers are not block containers,
 	and so some properties that were designed with the assumption of block layout
@@ -3345,7 +3348,7 @@ <h2 class="no-num no-ref heading settled heading" id=property-index><span class=
 <tr><th scope=row><a class=css-code data-link-type=property href=#propdef-grid-area title=grid-area>grid-area</a><td>&lt;grid-line&gt; [ / &lt;grid-line&gt; ]{0,3}<td>see individual properties<td>grid items<td>see individual properties<td>see individual properties<td>visual<td>see individual properties</table></div>
 
 
-<h2 class="no-num heading settled" id=issues-index><span class=content>Issues Index</span><a class=self-link href=#issues-index></a></h2><div style="counter-reset: issue"><div class=issue>The block layout spec should define this.<a href=#issue-8669c070> ↵ </a></div>
+<h2 class="no-num heading settled" id=issues-index><span class=content>Issues Index</span><a class=self-link href=#issues-index></a></h2><div style="counter-reset: issue"><div class=issue>The block layout spec should define this?<a href=#issue-839d056f> ↵ </a></div>
 
 <div class=issue>
 		We want the ability to collapse grid tracks