Adding .ui-front.

Author: tjvantoll

pages/classNames.html

@@ -18,6 +18,9 @@ <h3>Layout Helpers</h3>
 	<li>
 		<code>.ui-helper-clearfix</code>: Applies float wrapping properties to parent elements.
 	</li>
+	<li>
+		<code>.ui-front</code>: Applies z-index to manage the stacking of multiple widgets on the screen.
+	</li>
 </ul>
 
 <h3>Widget Containers</h3>