fix: processing content is default-content

src/QUI/ERP/Order/Controls/OrderProcess/Processing.php

@@ -50,6 +50,7 @@ public function __construct(array $attributes = [])
         $this->setAttribute('nodeName', 'section');
 
         $this->addCSSClass('quiqqer-order-step-processing');
+        $this->addCSSClass('default-content');
         $this->addCSSClass('quiqqer-order-step-processing-gateway');
         $this->addCSSFile(dirname(__FILE__) . '/Processing.css');
     }