小程序码样式居中

app/AdminAgent/Controllers/AgentProductController.php

@@ -90,7 +90,7 @@ class AgentProductController extends AdminController
             $grid->column('小程序码')
 				->display('查看')
 				->modal(function ($modal) {
-					return '<img src="'.admin_url('product/qrcode/' . $this->id).'" style="max-width:400px;max-height:400px;cursor:pointer">';
+					return '<img src="'.admin_url('product/qrcode/' . $this->id).'" style="max-width:400px;max-height:400px;cursor:pointer;display:block;margin:auto;">';
 				});
             $grid->column('updated_at')->width(100);