anchor.diff:  <div class="row">
  +
     <div class="col-sm-6 text-center">
       Pick a time <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
       <div class="btn-group" data-toggle="buttons">
  
positive.code: <br \>
  <div class="row">
  
    <div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
      <div class="panel panel-default">
        <div class="panel-heading" role="tab" id="headingOne">
  
negative.code:       </div>
        <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
          <div class="panel-body">
            <img class="img-responsive" src="/assets/cockatiel.jpg">
            Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid.
          </div>
        </div>
  