anchor.diff:  
         a.navbar-brand { color: #FFF !important; }
   
  -      .tab-pane { padding-top: 10px; }
  +      /* Tabs */
  +      .tab-content {
  +        border: 1px solid #ddd;
  +        border-top: 0px;
  +        padding: 10px;
  +      }
  +
  +      .nav-tabs {
  +          margin-bottom: 0;
  +      }
   
         /* Explanations */
         .w3c_explanation { border: 1px solid #ddd; background-color: #ffe; padding: 10px; margin: 5px 5px 25px 5px; font-size: 0.8em; }
  
positive.code: 
      <div class="container">
  
        <h1>MARKUP VALIDATION FOR <a href='<%= @url %>'><%= @url %></a></h1>
  
        <ul class="nav nav-tabs">
          <li class="active"><a href="#urls">List of URLs</a></li>
  
negative.code:         <div class="tab-pane active" id="urls">
            <% processed_pages = pages.select{|p| !p.exception} %>
            <% if processed_pages.size > 0 %>
              <div class="accordion">
                <% processed_pages.each do |page| %>
                  <h3>
                    <%= page.url %>
                    <div class="pull-right">
                      <span class="label label-danger"><%= "#{page.errors.length} ERRORS" %></span>
                      <span class="label label-warning"><%= "#{page.warnings.length} WARNINGS" %></span>
                    </div>
                  </h3>
  
                  <div style="padding:10px;">
                    <div class="accordion">
                      <% page.errors.sort_by {|e| e.line.to_i}.each do |error| %>
                        <h3>
                          <span class="label label-danger">ERROR</span>
                          <%= CGI::escapeHTML(error.text.capitalize) %>
                        </h3>
  
                        <div>
                          <% if error.line && error.col %>
                            <span class="coordinates label">
                              LINE <%= error.line %>, COL <%= error.col %>
                            </span>
                          <% end %>
  
                          <% if error.source && error.source.strip.length > 0 %>
                            <pre><code class="html"><%= error.source.strip %></code></pre>
                          <% end %>
  
                          <% if error.explanation && error.explanation.strip.length > 0 %>
                            <div class="w3c_explanation"><%= error.explanation.strip %></div>
                          <% end %>
                        </div>
                      <% end %>
  
                      <% page.warnings.sort_by {|w| w.line.to_i}.each do |warning| %>
                        <h3>
                          <span class="label label-warning">WARNING</span>
                          <%= CGI::escapeHTML(warning.text.capitalize) %>
                        </h3>
  
                        <div>
                          <% if warning.line && warning.col %>
                            <span class="coordinates label">
                              LINE <%= warning.line %>, COL <%= warning.col %>
                            </span>
                          <% end %>
  
                          <% if warning.source && warning.source.strip.length > 0 %>
                            <pre><code class="html"><%= warning.source.strip %></code></pre>
                          <% end %>
  
                          <% if warning.explanation && warning.explanation.strip.length > 0 %>
                            <div class="w3c_explanation"><%= warning.explanation.strip %></div>
                          <% end %>
                        </div>
                      <% end %>
                    </div>
                  </div>
                <% end %>
              </div>
            <% end %>
          </div>
  
  