Integrating UIkit with codeigniter

Good morning

I am new to codeigniter and MVC in general(I am Front-end developer) but I grasp the concept and it seems pretty simple.
I would like to use uikit with codeigniter could someone please direct me how to integrate one with the other, I would really appreciate it.

I've tried copy and pasting the link to a .js file but it gives me a 403 which is 'access forbidden' I have to mention that I am using a local web server(xampp) I also have to mention that I used welcome_message.php(as a test) to add my scripts and stylesheets(only for testing purposes)  To style something through Uikit's classes, but the styling has no effect, I've tried googling this as well but still no effect. I am using CI 3.x and I have not changed anything from the default codeigniter post extraction and installation.

How do I add stylesheets and scripts globally so that I have to define this only once?

Thank You

Kind Regards

Ryno Labuschagne