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, 13 insertions, 13 deletions

diff --git a/docs/_includes/css/responsive-utilities.html b/docs/_includes/css/responsive-utilities.html
index f32f59c4e..ac73bf645 100644
--- a/docs/_includes/css/responsive-utilities.html
+++ b/docs/_includes/css/responsive-utilities.html
@@ -32,28 +32,28 @@
       </thead>
       <tbody>
         <tr>
-          <th><code>.visible-xs-*</code></th>
+          <th scope="row"><code>.visible-xs-*</code></th>
           <td class="is-visible">Visible</td>
           <td class="is-hidden">Hidden</td>
           <td class="is-hidden">Hidden</td>
           <td class="is-hidden">Hidden</td>
         </tr>
         <tr>
-          <th><code>.visible-sm-*</code></th>
+          <th scope="row"><code>.visible-sm-*</code></th>
           <td class="is-hidden">Hidden</td>
           <td class="is-visible">Visible</td>
           <td class="is-hidden">Hidden</td>
           <td class="is-hidden">Hidden</td>
         </tr>
         <tr>
-          <th><code>.visible-md-*</code></th>
+          <th scope="row"><code>.visible-md-*</code></th>
           <td class="is-hidden">Hidden</td>
           <td class="is-hidden">Hidden</td>
           <td class="is-visible">Visible</td>
           <td class="is-hidden">Hidden</td>
         </tr>
         <tr>
-          <th><code>.visible-lg-*</code></th>
+          <th scope="row"><code>.visible-lg-*</code></th>
           <td class="is-hidden">Hidden</td>
           <td class="is-hidden">Hidden</td>
           <td class="is-hidden">Hidden</td>
@@ -62,28 +62,28 @@
       </tbody>
       <tbody>
         <tr>
-          <th><code>.hidden-xs</code></th>
+          <th scope="row"><code>.hidden-xs</code></th>
           <td class="is-hidden">Hidden</td>
           <td class="is-visible">Visible</td>
           <td class="is-visible">Visible</td>
           <td class="is-visible">Visible</td>
         </tr>
         <tr>
-          <th><code>.hidden-sm</code></th>
+          <th scope="row"><code>.hidden-sm</code></th>
           <td class="is-visible">Visible</td>
           <td class="is-hidden">Hidden</td>
           <td class="is-visible">Visible</td>
           <td class="is-visible">Visible</td>
         </tr>
         <tr>
-          <th><code>.hidden-md</code></th>
+          <th scope="row"><code>.hidden-md</code></th>
           <td class="is-visible">Visible</td>
           <td class="is-visible">Visible</td>
           <td class="is-hidden">Hidden</td>
           <td class="is-visible">Visible</td>
         </tr>
         <tr>
-          <th><code>.hidden-lg</code></th>
+          <th scope="row"><code>.hidden-lg</code></th>
           <td class="is-visible">Visible</td>
           <td class="is-visible">Visible</td>
           <td class="is-visible">Visible</td>
@@ -104,15 +104,15 @@
       </thead>
       <tbody>
         <tr>
-          <td><code>.visible-*-block</code></td>
+          <th scope="row"><code>.visible-*-block</code></th>
           <td><code>display: block;</code></td>
         </tr>
         <tr>
-          <td><code>.visible-*-inline</code></td>
+          <th scope="row"><code>.visible-*-inline</code></th>
           <td><code>display: inline;</code></td>
         </tr>
         <tr>
-          <td><code>.visible-*-inline-block</code></td>
+          <th scope="row"><code>.visible-*-inline-block</code></th>
           <td><code>display: inline-block;</code></td>
         </tr>
       </tbody>
@@ -134,7 +134,7 @@
       </thead>
       <tbody>
         <tr>
-          <th>
+          <th scope="row">
             <code>.visible-print-block</code><br>
             <code>.visible-print-inline</code><br>
             <code>.visible-print-inline-block</code>
@@ -143,7 +143,7 @@
           <td class="is-visible">Visible</td>
         </tr>
         <tr>
-          <th><code>.hidden-print</code></th>
+          <th scope="row"><code>.hidden-print</code></th>
           <td class="is-visible">Visible</td>
           <td class="is-hidden">Hidden</td>
         </tr>