[css-text-decor-3] Improve text-emphasis images. #3436

Author: fantasai

css-text-decor-3/Overview.bs

@@ -851,12 +851,12 @@ Emphasis Mark Position: the 'text-emphasis-position' property</h3>
           <td rowspan="3">
               <img alt="Emphasis marks appear over each emphasized character in horizontal Japanese text."
                   title="Emphasis (shown in blue for clarity) applied above a fragment of Japanese text"
-                  src="images/text-emphasis-ja.png" height="39" width="208">
+                  src="images/text-emphasis-ja.png" height="39" width="209">
 
           <td rowspan="4">
               <img alt="Emphasis marks appear on the right of each emphasized character in vertical Japanese text."
                   title="Emphasis applied on the right of a fragment of Japanese text"
-                  src="images/text-emphasis-v.gif" height="89" width="34">
+                  src="images/text-emphasis-v.gif" height="79" width="34">
         <tr>
           <td scope="row">Korean
         <tr>
@@ -868,7 +868,7 @@ Emphasis Mark Position: the 'text-emphasis-position' property</h3>
           <td>
             <img alt="Emphasis marks appear below each emphasized character in horizontal Simplified Chinese text."
                   title="Emphasis (shown in blue for clarity) applied below a fragment of Chinese text"
-                  src="images/text-emphasis-zh.gif" height="28" width="133">
+                  src="images/text-emphasis-zh.png" height="39" width="140">
       </tbody>
     </table>
   </div>