I have a site

HI

I have a site in development at http://financial-advisers.net/yourtown/ which is a whitelabel site I am doing for another firm of designers. The initial brief was for a slider at the top with a button "Watch Now" link that popped up a video which is what I have done.

The theme is Divi and I am using their slider (only the one image in it at the moment) I could not assign a class to the button but could assign a class to the full module which worked OK - you can click anywhere on the slider and the video pops up. However, the client now wants an additional slide with the same button and a different video. Is there a way to assign a css id to the "watch now" button on each slide to activate the pop up.

Thanks for your help

Paul