Lightbox-type popup plugin for use with this contact form?

Hello!

I was wondering if anyone knew of a plugin that would allow the Fast Secure Contact Form plugin to act as a Lightbox/Fancybox (a popup-type window with a sign-up form instead of, for example, an image)?

PS: Our website is https://www.leadframeworks.com. Check this webpage as an example: https://www.leadframeworks.com/certification/value-expert/. We would like to place an enrollment button on this webpage, and when it is pressed, a lightbox-type window pops up with a sign-up form inside.

Thank you!

https://www.ads-software.com/extend/plugins/si-contact-form/