Add CSS hover states to global files

Hey Telligent community!

http://ianlunn.github.io/Hover/ is a great resource for CSS hover states.

"A collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on. Easily apply to your own elements, modify or just use for inspiration. Available in CSS, Sass, and LESS."

I may want to leverage a few of these in different areas of the community. I know how to reference the different classes in my html, but I was hoping someone could create a simplified walkthrough on how to upload the Hover.CSS files from github, into the right places within a Telligent community. 

Another question I'd like to learn more about is which of the formats should be used, and why? CSS, Sass, or LESS?

 pls let me know if you know of a good person to help answer this question!