Modified tips

pages/layout/collapsed-sidebar.html

@@ -348,7 +348,7 @@
         <section class="content">
           <div class="callout callout-info">
             <h4>Tip!</h4>
-            <p>Add the sidebar-collapse class to the body tag to get this layout</p>
+            <p>Add the sidebar-collapse class to the body tag to get this layout. You should combine this option with a fixed layout if you have a long sidebar. Doing that will prevent your page content from getting stretched vertically.</p>
           </div>
           <!-- Default box -->
           <div class="box">