/* * Let's us display code inside of the <head> * tags in the WordPress admin area. * We will use this to custom CSS for our plugin * with the WordPress admin area * */ function my_plugin_back_end_css() { wp_enqueue_style( 'my_plugin_back_end_css', plugins_url('css/back-end.css', __FILE__) ); } add_action( 'admin_head', 'my_plugin_back_end_css' );