anchor.diff:  
   </div>
   
  -<hr>
  +<hr class="border-bottom">
   
   <br>
   
  
positive.code: <br>
  
  <h6 class="omega text-muted">Nice work!</h6>
  
negative.code:       </div>
      </div>
  
      <hr class="border-bottom">
  
      <div class="row">
        <div class="col-md-6">
  