anchor.diff:  
   <footer class='row footer'>
     <div class="container-fluid">
  -    <div class='col-md-3 col-sm-3'>
  +    <div class='col-sm-3'>
         <h4>About DataCite</h4>
         <ul>
         <% data.links.about_links.each do |link| %>
  
positive.code:       <% end %>
        </ul>
      </div>
      <div class='col-md-3 col-sm-3'>
        <h4>Resources</h4>
        <ul>
        <% data.links.resources_links.each do |link| %>
  
negative.code:       <% end %>
        </ul>
      </div>
      <div class='col-sm-3'>
        <h4>Services</h4>
        <ul>
        <% data.links.services_links.each do |link| %>
  