anchor.diff:    <%= csrf_meta_tags %>
   </head>
   <body>
  -
  -  <nav>
  -    <% if user_signed_in? %>
  -    Signed in as <%= current_user.email %>
  -    <%= link_to "Sign out", destroy_user_session_path, :method => :delete %>
  -  <% else %>
  -    <%= link_to "Sign up", new_user_registration_path %>
  -    <%= link_to "Sign in", new_user_session_path %>
  -  <% end %>
  -  </nav>
  -
  -
       <div class="navbar navbar-inverse navbar-fixed-top">
         <div class="navbar-inner">
           <div class="container">
  
positive.code:     </div>
    <% end %>
  <% end %>
  
  <%= yield %>
  </div>
  
  </body>
  
negative.code:     </div>
  
  <div class="container">
    <nav>
      <% if user_signed_in? %>
      Signed in as <%= current_user.email %>
      <%= link_to "Sign out", destroy_user_session_path, :method => :delete, :class => 'btn' %>
    <% else %>
      <%= link_to "Sign up", new_user_registration_path, :class => 'btn btn-success' %>
      <%= link_to "Sign in", new_user_session_path, :class => 'btn' %>
    <% end %>
    </nav>
  <% [:notice, :error, :alert].each do |level| %>
    <% unless flash[level].blank? %>
      <div class="alert alert-<%= flash_class(level) %>">
  