anchor.diff:  
       <body class="page-header-fixed page-sidebar-closed-hide-logo page-content-white page-container-bg-solid">
           <div class="page-wrapper">
  -            
  +
               <!-- BEGIN HEADER -->
               <!-- Includes: logo, mega menu, header search box, responsive menu toggler, top navigation menu -->
               <%= render "layouts/erp/backend/header" %>
               <!-- END HEADER -->
  -            
  +
               <!-- BEGIN HEADER & CONTENT DIVIDER -->
               <div class="clearfix"> </div>
               <!-- END HEADER & CONTENT DIVIDER -->
  -            
  +
               <!-- BEGIN CONTAINER -->
               <div class="page-container">
  -                
  +
                   <!-- BEGIN SIDEBAR -->
                   <%= render "layouts/erp/backend/sidebar" %>
                   <!-- END SIDEBAR -->
  -                
  +
                   <!-- BEGIN CONTENT -->
                   <div class="page-content-wrapper">
                       <!-- BEGIN CONTENT BODY -->
                       <div class="page-content">
                           <!-- BEGIN PAGE HEADER -->
  -                        
  +
                           <!-- BEGIN PAGE BAR -->
                           <!-- Includes: breadcrumb and actions -->
                           <%= render "layouts/erp/backend/page_bar" %>
                           <!-- END PAGE BAR -->
  -                        
  +
                           <!-- BEGIN PAGE TITLE-->
                           <!--<h1 class="page-title">This's Title</h1>-->
                           <% if content_for?(:title) %>
  
positive.code:                             <br />
                          <% end %>
                          <!-- END PAGE TITLE-->
                          
                          <!-- END PAGE HEADER-->
                          <div class="row">
                              <div class="col-md-12">
                                  <%= yield %>
                              </div>
                          </div>   
                      </div>
                      <!-- END CONTENT BODY -->
                  </div>
                  <!-- END CONTENT -->
                  
                  <!-- BEGIN QUICK SIDEBAR -->
                  <%= render "layouts/erp/backend/quick_sidebar" %>
                  <!-- END QUICK SIDEBAR -->
                  
              </div>
              <!-- END CONTAINER -->
              
              <!-- BEGIN FOOTER -->
              <%= render "layouts/erp/backend/footer" %>
              <!-- END FOOTER -->
              
          </div>
          
          <!-- BEGIN JAVASCRIPT INCLUDES -->
          <%= render "layouts/erp/backend/javascript_includes" %>
          <!-- END JAVASCRIPT INCLUDES -->
          
          <!-- stackable -->
          
          <!-- BEGIN toastr flash messages -->
              <%= render 'layouts/erp/backend/flash_messages' %>
          <!-- END toastr flash messages -->
          
      </body>
  
  </html>
negative.code:     <!-- BEGIN HEAD -->
      <head>
          <%= csrf_meta_tags %>
  
          <meta charset="utf-8" />
          <title><%= yield(:title) %> | ERP, Enterprise Resource Planning Software, ERP Software, ERP System, ERP Solutions | Global Naturesoft</title>
          <meta http-equiv="X-UA-Compatible" content="IE=edge">
          <meta content="width=device-width, initial-scale=1" name="viewport" />
          <meta content="" name="description" />
          <meta content="" name="author" />
  
          <link href="https://fonts.googleapis.com/css?family=Roboto:100,100i,300,300i,400,400i,500,500i,700,700i,900,900i&amp;subset=vietnamese" rel="stylesheet">
  
          <!-- BEGIN GLOBAL MANDATORY STYLES -->
          <%= stylesheet_link_tag "http://fonts.googleapis.com/css?family=Open+Sans:400,300,600,700&subset=all" %>
          <%= stylesheet_link_tag "/backend/assets/global/plugins/font-awesome/css/font-awesome.min.css" %>
  