I would like to call my header CSS file in every pages, so I created a function to calling the header which the code as below and this code are in BaseController.php

public function __construct()
{
	Asset::container('header')
		->add('style','css/style.css');

	parent::__construct();
}

public function __call($method, $parameters)
{
    return Response::error('404');
}

After I done the function I'm call the function at layout.blade.php with the following code.

{{ Asset::container('header')->styles() }}

But I failed to view my pages with Class 'Asset' not found. Which part I missed or my source are not correct?