[css3-layout] Defined how to determine the value of 'display' on

elements with 'grid-area' other than 'none' (which is the same as on
elements with 'position: absolute'.)

Author: bert-github

css-template/Overview.src.html

@@ -41,8 +41,8 @@ <h2 class="no-num no-toc">[LONGSTATUS] [DATE: 3 August 2004]</h2>
 
   <dt>Feedback:
     <dd>
-      <a href="mailto:www-style@w3.org?subject=%5B[css-template]%5D%20feedback">www-style@w3.org</a>
-      with subject line &ldquo;<kbd>[css-template] <var>&hellip; message topic &hellip;</var></kbd>&rdquo;
+      <a href="mailto:www-style@w3.org?subject=%5B[css3-layout]%5D%20feedback">www-style@w3.org</a>
+      with subject line &ldquo;[css3-layout] <var>&hellip; message topic &hellip;</var>&rdquo;
       (<a rel="discussion" href="http://lists.w3.org/Archives/Public/www-style/">archives</a>)
 
   <dt>Editors:
@@ -2181,17 +2181,12 @@ <h3>Stacking elements on top of a grid: 'grid-area'</h3>
 </div>
 
 <p>The 'grid-area' property can take an element out of the flow and
-position it relative to a grid. The 'z-index' is used to determine the
+position it relative to a grid. Unless the value of 'grid-area' is
+''none'', the 'z-index' property applies and determines the 
 stacking level. If the element has no <span>grid ancestor,</span> the
 element is positioned as if the value were ''none''. The values have
 the following meanings:
 
-<p class=issue>Define the effect of 'z-index'. Note that 'z-index' in
-CSS2 did not apply to non-positioned elements.
-
-<p class=issue>Specify that 'float' does not apply if 'grid-area' is
-not ''none''. Anything to say about the computed value of 'display'?
-
 <dl>
 <dt>none
 <dd>
@@ -2272,6 +2267,34 @@ <h3>Stacking elements on top of a grid: 'grid-area'</h3>
 <p class=issue>With what size?
 </dl>
 
+<p>If an elements has a 'grid-area' other than ''none'', then the
+'float' property does not apply and the values of 'display' are
+determined according to this table:
+
+<table class=equiv-table>
+<thead>
+<tr>
+<th>Specified value <th>Computed value
+<tbody>
+<tr>
+<td>inline-table <td>table
+<tr>
+<td>inline, table-row-group, table-column, table-column-group,
+table-header-group, table-footer-group, table-row, table-cell,
+table-caption, inline-block, run-in, compact, ruby, ruby-base,
+ruby-text, ruby-base-group, ruby-text-group <td>block
+<tr>
+<td>inline-flex <td>flex
+<tr>
+<td>others <td>same as specified
+</table>
+
+<p class=note>Note that “others” includes ''list-item'', ''table'',
+''container' ''flex'' and of course ''none''.
+
+<p class=issue>Check that the list above covers everything in
+[[CSS3BOX]].
+
 <div class=example>
 <p>For example, these rules