anchor.diff:    <%= csrf_meta_tags %>
   </head>
    <body>
  +  <header>
       <!-- Some poorly placed logic -->
  -
       <% categories = Category.all %>
       <% pages = Page.all %>
       <div class="navbar navbar-inverse" role="navigation">
  
positive.code:           </div><!--/.nav-collapse -->
        </div><!-- /.container -->
      </div> <!-- /.navbar -->
  
        <div class="col-xs-6 col-sm-3 sidebar-offcanvas categories" id="sidebar" role="navigation">
          <div class="list-group">
  
negative.code:           <div class="message-output">
              <%= render 'message/message' %>
            </div>
            
            <section>
              <%= yield %>
            </section>
  
          </div><!--/span-->
        </div><!--/row-->
  
  