Updating changelog with the \"sticky footer\" feature added

documentation/changelog.html

@@ -48,14 +48,14 @@
   <li>Admin: Added courses from sessions inside AJAX popup of courses list in users list (SVN#22398)</li>
   <li>Admin: Showing full-length course titles in list of courses while adding to sessions(SVN#22399)</li>
   <li>Admin: Added session name in title of session edition pages(SVN#22400)</li>
-  <li>Admin: Terms and conditions added DT#4320</li>
+  <li>Admin: Terms and conditions added DT#4320</li>  
 </ul>
 <br />
-<h3>Known issues</h3>
+<h3>CSS changes</h3>
 <ul>
-  <li></li>
-  <li></li>
+  <li>Sticky footer now available in all Dokeos stylesheets. If you own a custom stylesheet you must update it see <a href="https://bts.dokeos.com/issues/show/3549">DT#3549</a> for further details.</li>
 </ul>
+
 <br />
 <h3>Known issues</h3>
 <br />