anchor.diff:  
           <div class="col-md-5">
   
  -          <div class="pull-right shopping-cart">
  -            
  +          <div class="pull-right">
             </div>
             
           </div>
  
positive.code:       
  
            </ul>
            <h3 class="wordmark text-muted"><a href="/">Store</a></h3>
          </div>
          </div>
      </div>
  
      
  
negative.code:     <div id="nav">
        <div class="container-fluid">
          <div class="masthead">
  
  
            <ul class="nav nav-pills pull-right">
  
              <li class="">
                <a href="/">浏览商品</a>
              </li>
  
              <% if user_signed_in? %>
              <li class="<%= show_nav_active('devise/sessions', 'new') %> dropdown">            
  