Load target not working - want to load a Vimeo video

I am trying to make a page like YouTube, with a list of thumbnails and one player rectangle that is in slideshow element. The guides are all not very specific.

created a class of item in slideshow

link to class

also the link popup is very hard to understand. I always get the right video but playing in a new page.

any help would be amazing, thanks!

Just saw your question without response…in case you still need help specify which theme / stack you’re using.