[giow] (2) Define <th> centering more accurately.

Fixing http://www.w3.org/Bugs/Public/show_bug.cgi?id=9542

git-svn-id: http://svn.whatwg.org/webapps@5464 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -84596,8 +84596,7 @@ <h4 id=alignment><span class=secno>14.2.4 </span>Alignment</h4>
 thead, tbody, tfoot, table &gt; tr { vertical-align: middle; }
 tr, td, th { vertical-align: inherit; }
 sub { vertical-align: sub; }
-sup { vertical-align: super; }
-th { text-align: center; }</pre>
+sup { vertical-align: super; }</pre>
 
   <hr><p>The following rules are also expected to apply, as
   <a href=#presentational-hints>presentational hints</a>:</p>
@@ -84699,6 +84698,13 @@ <h4 id=alignment><span class=secno>14.2.4 </span>Alignment</h4>
   descendant, the most deeply nested such element is expected to
   override the others.</p>
 
+  <p>User agents are expected to have a rule in their user agent
+  stylesheet that matches <code><a href=#the-th-element>th</a></code> elements that have a parent
+  node whose computed value for the 'text-align' property is its
+  initial value, whose declaration block consists of just a single
+  declaration that sets the 'text-align' property to the value
+  'center'.</p> <!-- q.v. '-moz-center-or-inherit' -->
+
   </div>
 
 

index

@@ -80514,8 +80514,7 @@ form { margin-bottom: 1em; }</pre>
 thead, tbody, tfoot, table &gt; tr { vertical-align: middle; }
 tr, td, th { vertical-align: inherit; }
 sub { vertical-align: sub; }
-sup { vertical-align: super; }
-th { text-align: center; }</pre>
+sup { vertical-align: super; }</pre>
 
   <hr><p>The following rules are also expected to apply, as
   <a href=#presentational-hints>presentational hints</a>:</p>
@@ -80617,6 +80616,13 @@ tr[valign=baseline], td[valign=baseline], th[valign=baseline] { /* <a href=#case
   descendant, the most deeply nested such element is expected to
   override the others.</p>
 
+  <p>User agents are expected to have a rule in their user agent
+  stylesheet that matches <code><a href=#the-th-element>th</a></code> elements that have a parent
+  node whose computed value for the 'text-align' property is its
+  initial value, whose declaration block consists of just a single
+  declaration that sets the 'text-align' property to the value
+  'center'.</p> <!-- q.v. '-moz-center-or-inherit' -->
+
   </div>
 
 

source

@@ -96557,8 +96557,7 @@ form { margin-bottom: 1em; }</pre>
 thead, tbody, tfoot, table > tr { vertical-align: middle; }
 tr, td, th { vertical-align: inherit; }
 sub { vertical-align: sub; }
-sup { vertical-align: super; }
-th { text-align: center; }</pre>
+sup { vertical-align: super; }</pre>
 
   <hr>
 
@@ -96666,6 +96665,13 @@ tr[valign=baseline], td[valign=baseline], th[valign=baseline] { /* <a href="#cas
   descendant, the most deeply nested such element is expected to
   override the others.</p>
 
+  <p>User agents are expected to have a rule in their user agent
+  stylesheet that matches <code>th</code> elements that have a parent
+  node whose computed value for the 'text-align' property is its
+  initial value, whose declaration block consists of just a single
+  declaration that sets the 'text-align' property to the value
+  'center'.</p> <!-- q.v. '-moz-center-or-inherit' -->
+
   </div>