Menu CSS

[Rockies1986]

I am new to design and I am trying set up a menu on my test site.

http://webpatienteducation.com/menutest.html

I using Dreamweaver and I am just unsure how to get the CSS file to apply so the menu appear correctly. I was able to add the html to the page and get the list of menu items to appear but the css styling doesn't appear.

Thanks.