Deterioration page style in Laravel

I'm using Laravel 5 . When I'm on this route :

Route::match(['get','post'],'/admin',[ 'as' => 'admin', 'uses' =>'Admin_controller@home']);

Everything is correct But when I routed as follows:

Route::match(['get','post'],'/admin/everything',[ 'as' => 'admin.slider', 'uses' =>'Admin_controller@slider']);

All styles and page templates are broken Like this :

But should be like Sorry for my english .

via Chebli Mohamed