add_action( 'elementor/editor/after_enqueue_styles', function() {
   echo '<style type="text/css">

 .elementor-panel .panel-elements-category-items {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  }

 .elementor-panel .elementor-element-wrapper {
  flex: 1 1 80px;
 }

  </style>';
} );