Fixes to scope

as discssued in
https://github.com/twbs/bootstrap/issues/15117#issuecomment-63029993

- added ``scope="row"`` to row headers
- made sure row headers are actual ``<th>`` elements
- removed ``scope="col"`` where it was redundant
- simplified table examples with (to me) unnecessary
``rowspan``/``colspan`` (unless you really want complex tables, in which
case we would need full-on ``id`` and ``headers`` attributes to make
sure each table cell has an explicit association with the related header
cells - overkill, in my opinion)
- one table (in typography) left header-less, as it's more or less presentational (though its structure is still important, hence not adding ``role="presentation"``)

1 files changed, 9 insertions, 9 deletions

diff --git a/docs/_includes/css/grid.html b/docs/_includes/css/grid.html
index cea5b17ee..3563aa78a 100644
--- a/docs/_includes/css/grid.html
+++ b/docs/_includes/css/grid.html
@@ -68,49 +68,49 @@
       </thead>
       <tbody>
         <tr>
-          <th class="text-nowrap">Grid behavior</th>
+          <th class="text-nowrap" scope="row">Grid behavior</th>
           <td>Horizontal at all times</td>
           <td colspan="3">Collapsed to start, horizontal above breakpoints</td>
         </tr>
         <tr>
-          <th class="text-nowrap">Container width</th>
+          <th class="text-nowrap" scope="row">Container width</th>
           <td>None (auto)</td>
           <td>750px</td>
           <td>970px</td>
           <td>1170px</td>
         </tr>
         <tr>
-          <th class="text-nowrap">Class prefix</th>
+          <th class="text-nowrap" scope="row">Class prefix</th>
           <td><code>.col-xs-</code></td>
           <td><code>.col-sm-</code></td>
           <td><code>.col-md-</code></td>
           <td><code>.col-lg-</code></td>
         </tr>
         <tr>
-          <th class="text-nowrap"># of columns</th>
+          <th class="text-nowrap" scope="row"># of columns</th>
           <td colspan="4">12</td>
         </tr>
         <tr>
-          <th class="text-nowrap">Column width</th>
+          <th class="text-nowrap" scope="row">Column width</th>
           <td class="text-muted">Auto</td>
           <td>~62px</td>
           <td>~81px</td>
           <td>~97px</td>
         </tr>
         <tr>
-          <th class="text-nowrap">Gutter width</th>
+          <th class="text-nowrap" scope="row">Gutter width</th>
           <td colspan="4">30px (15px on each side of a column)</td>
         </tr>
         <tr>
-          <th class="text-nowrap">Nestable</th>
+          <th class="text-nowrap" scope="row">Nestable</th>
           <td colspan="4">Yes</td>
         </tr>
         <tr>
-          <th class="text-nowrap">Offsets</th>
+          <th class="text-nowrap" scope="row">Offsets</th>
           <td colspan="4">Yes</td>
         </tr>
         <tr>
-          <th class="text-nowrap">Column ordering</th>
+          <th class="text-nowrap" scope="row">Column ordering</th>
           <td colspan="4">Yes</td>
         </tr>
       </tbody>