Added final longdescs.

Author: bert-github

css3-layout/Overview.src.html

@@ -1278,7 +1278,7 @@ <h2 id=position>Flowing content into the template: the 'position'
 </pre>
 
 <div class=figure>
-  <p><img src="granite.png" alt="screendump">
+  <p><img src="granite.png" alt="screendump" longdesc="granite.desc">
   <p class=caption>Possible rendering of the <code>DL</code> list,
   with items sorted into three columns.
 </div><!-- .figure -->
@@ -1653,7 +1653,7 @@ <h2 id=paged>Page-based templates and other templates in paged media</h2>
 
 <div class=figure>
   <p><img src="newspaper.png" alt="5-column newspaper page with some
-  blocks of text that span several columns">
+  blocks of text that span several columns" longdesc="newspaper.desc">
 
   <p class=caption>The front page of a newspaper, with the first parts
   of several stories that are continued on other pages and headings
@@ -1728,7 +1728,8 @@ <h2 id=stacking-order>Stacking order</h2>
 </pre>
 
 <div class=figure>
-  <p><img src="overlap.png" alt="Five colored rectangles">
+  <p><img src="overlap.png" alt="Five colored rectangles"
+  longdesc="overlap.desc">
   <p class=caption>Rendering of the above example.
 </div>
 </div>
@@ -2100,6 +2101,7 @@ <h2 id=history>History</h2>
 <div class=figure id=intrusion>
   <p><img src="cutout.svg" alt="An image that partially overlaps two
   columns makes the text wrap around it on both sides."
+  longdesc="cutout.desc">
 
   <p class=caption>An image (or a “pull quote”) is placed centered
   on the page and intrudes on two areas.