anchor.diff:          <td class="selectable-row">
             <div class="relative">
               <label>
  -              <input type="checkbox" />
  +              <input type="checkbox" class="js-toggle-row" />
               </label>
             </div>
           </td>
  
positive.code: 
      <p>The second example shows a table with selectable rows. Selected rows highlight in yellow. The checkbox in the header selects all rows.</p>
    </div>
    <ul class="col-md-6">
      <table class="table table-bordered table-hover">
        <thead>
          <tr class="table-header">
  
negative.code:           <th>Secondary header</th>
          </tr>
        </thead>
        <tbody>
          <tr>
            <td>Typical row</td>
          </tr>
          <tr>
            <td>Typical row</td>
          </tr>
        </tbody>
      </table>
  
      <table class="table table-bordered" data-module="selectable-table">
        <thead>
          <tr class="table-header">
            <th></th>
  