anchor.diff:              <!-- <li><a href="<%= link.address %>" <%= link.css_class if link.class %>><%= link.phrase %></a></li> -->
               <% end %> 
             <% end %>
  -  </div>
   
   </body>
   </html>
  
positive.code:         
          <% if session[:user_id] %>
            <% user = User.find(session[:user_id]) %>
            <li><a href="http://instagram.com/<%= user.user_name %>"><img src="<%= user.ig_profile_url %>"> <%= user.user_name %></a></li>
            <hr>
            <li><a href="<%= new_trip_path %>">Create a trip</a></li>
  
  
negative.code: 
  <body>
  
      <div class="container">
        <div class="main-navbar">
          <button class="navbar-button" type="button" >
  