/**
 * Implements hook_library_alter().
 */
function seven_library_alter(&$attachment, $extension) {
  if ($extension == 'core/drupal.vertical-tabs') {
    foreach ($attachment['css'] as $key => $css) {
      if ($css['data'] == 'core/misc/vertical-tabs.css') {
        $attachment['css'][$key]['data'] = 'core/themes/seven/css/components/vertical-tabs.css';
      }
    }
  }
}