Ask question - VM - css

Hi there,

I want to make the "ask question" as overlay popup and in same shape as the rest of the website, but I dont know how. Can oyu please help me?

I ask for the template style, what css can I where store to have a nice ask question?

Here for example:

http://quicksat.net/en/private/suppleme ... ish-detail

You are refering to "Ask a question about this product" under the "Add to cart" button?
You would like to modify the link itself or popup that shows?