anchor.diff:  </div>
   
   <div class='row'>
  -  <p>
  -    The code is very simple, isn't it?
  -  </p>
  +  <p>The code is very simple, isn't it?</p>
   
     <p>
       But it can get better! We can use the <code>wrapper_mapping</code> option
  
positive.code: </div>
  
  <div class='row'>
    <p>
      The code is straightforward and looks like this:
    </p>
  
    <pre>
      <code data-language='ruby'>
  
negative.code: <div class='row'>
    <h4>Building your first form</h4>
  
    <p>Example: Lets build the following form.</p>
  </div>
  
  <div class='row'>
  