fix shortcode

src/Stepper.php

@@ -22,22 +22,17 @@ class Stepper
         add_action('wp_enqueue_scripts', [$this, 'enqueue']);
         add_action('wp_ajax_nopriv_stepper_submit', [$this, 'onSubmit']);
         add_action('wp_ajax_stepper_submit', [$this, 'onSubmit']);
-        add_action('wp_footer', [$this, 'enqueueOverwrite']);
 
         if (!is_admin()) {
+            add_action('wp_footer', [$this, 'enqueueOverwrite']);
             add_shortcode('stepper', [$this, 'handle']);
         }
     }
 
     public function enqueueOverwrite(): void
     {
-        if (is_admin()) {
-            return;
-        }
-
         ob_start();
         require(__DIR__ . '/../templates/overwrite.htm');
-
         echo ob_get_clean();
     }
 
@@ -49,7 +44,9 @@ class Stepper
 
     public function handle()
     {
+        ob_start();
         require(__DIR__ . '/../templates/stepper.htm');
+        return ob_get_clean();
     }
 
     public function validate($payload)

stepper.php

@@ -21,6 +21,7 @@ use Zoomyboy\Stepper\Stepper;
 register_activation_hook(__FILE__, function () {
 	add_option('it-slider-options', [
 		'it-slider-color' => '#006600',
+		'it-slider-access-key' => null,
 	]);
 });
 
@@ -28,6 +29,9 @@ register_deactivation_hook(__FILE__, function () {
 	delete_option('it-slider-options');
 });
 
+add_action('admin_enqueue_scripts', function () {
+	wp_enqueue_style('it-admin-styles', plugin_dir_url(__FILE__) . '/assets/css/backend.css');
+});
 
 $stepper = new Stepper();
 $stepper->loadEnv(__DIR__);