anchor.diff:            <span class="icon-bar"></span>
             <span class="icon-bar"></span>
           </button>
  -        <a class="navbar-brand" href="#">GlassGuide</a>
  +        <a class="navbar-brand" href="#">メガネガイド</a>
           <div class="navbar-collapse collapse navbar-responsive-collapse">
             <ul class="nav navbar-nav">
  -            <li><%= link_to "Link1", "/path1"  %></li>
  -            <li><%= link_to "Link2", "/path2"  %></li>
  -            <li><%= link_to "Link3", "/path3"  %></li>
             </ul>
           </div>
         </div>
  
positive.code: 
      <%= stylesheet_link_tag "application", :media => "all" %>
  
      <!-- For third-generation iPad with high-resolution Retina display: -->
      <!-- Size should be 144 x 144 pixels -->
      <%= favicon_link_tag 'apple-touch-icon-144x144-precomposed.png', :rel => 'apple-touch-icon-precomposed', :type => 'image/png', :sizes => '144x144' %>
  
      <!-- For iPhone with high-resolution Retina display: -->
      <!-- Size should be 114 x 114 pixels -->
      <%= favicon_link_tag 'apple-touch-icon-114x114-precomposed.png', :rel => 'apple-touch-icon-precomposed', :type => 'image/png', :sizes => '114x114' %>
  
      <!-- For first- and second-generation iPad: -->
      <!-- Size should be 72 x 72 pixels -->
      <%= favicon_link_tag 'apple-touch-icon-72x72-precomposed.png', :rel => 'apple-touch-icon-precomposed', :type => 'image/png', :sizes => '72x72' %>
  
      <!-- For non-Retina iPhone, iPod Touch, and Android 2.1+ devices: -->
      <!-- Size should be 57 x 57 pixels -->
      <%= favicon_link_tag 'apple-touch-icon-precomposed.png', :rel => 'apple-touch-icon-precomposed', :type => 'image/png' %>
  
      <!-- For all other devices -->
      <!-- Size should be 32 x 32 pixels -->
      <%= favicon_link_tag 'favicon.ico', :rel => 'shortcut icon' %>
  
      <%= javascript_include_tag "application" %>
    </head>
    <body>
  
negative.code: 
      <div class="container">
        <div class="row">
          <div class="col-lg-12">
            <%= bootstrap_flash %>
            <%= yield %>
          </div>
        </div><!--/row-->
  
        <footer>
  