<table class="container">
  <tr>
    <td>

      <table class="row">
        <tr>
          <th class="columns first">
            Thing 1
          </th>
          <th class="columns">
            Thing 2
          </th>
          <th class="columns last">
            Thing 3
          </th>
        </tr>
      </table>

      <table class="row collapse">
        <tr>
          <th class="small-12 large-12 columns first last">
            <p>This is a collapse column sit amet, consectetur adipisicing elit.