One form page and integrated pop up form on a button in Explore page

One form page and integrated pop up form on a button in Explore page
The new page is attached below.

And the pop up I want is under explore.html also attached below
Description of requirements/features: The button the Add to Favourite - change to Request for Proposal.
When the button above is clicked, I want a popup overlay form to appear. Refer to this :
https://learn.indiegogo.com/enterprise/ (when you click a pink button titled : learn about indiegogo enterprise )