banner修改列表

app/Admin/Controllers/v3/BannersController.php

@@ -26,7 +26,7 @@ class BannersController extends AdminController
                 return empty($market) ? '' : $market['name'];
             });
             $grid->column('title');
-            $grid->column('cover_url')->image(50);
+            $grid->column('cover_url')->image('',100);
             $grid->column('cover_type_text');
             $grid->column('path');
             $grid->column('path_type_text');