anchor.diff:                  <th>Description</th>
                 </tr>
               </thead>
  -            <tbody>
  +            <tbody id="lesson-group">
                   <%= render partial: 'lessons/lesson', collection: @lessons, as: :lesson %>
               </tbody>
             </table>
  
positive.code:     <div class="col-md-6">
        <div class="panel panel-default">
          <div class="panel-heading">
            <h3 class="panel-title" style="text-align: center;">Enrolled Courses</h3>
          </div>
          <div class="panel-body">
            <table class="table">
  
negative.code:                 <th>Description</th>
                </tr>
              </thead>
              <tbody id="course-group">
                  <%= render partial: 'lessons/course', collection: @courses, as: :course %>
              </tbody>
  
  