<div class="tco-sidebar">
  <div class="tco-row">
    <div class="tco-column">
      <div class="tco-box">
        <header class="tco-box-header">
          <h2 class="tco-box-title">Save</h2>
        </header>
        <div class="tco-box-content">
          <p><?php _e( 'Once you are satisfied with your settings, click the button below to save them.', 'cornerstone' ); ?></p>
          <button class="tco-btn tco-btn-block" type="submit" name="submit" data-tco-module-target="update"><?php _e( 'Update', 'cornerstone' ); ?></button>
        </div>
      </div>
    </div>
  </div>
</div>