Hi there I'm Edd.
So I saw a video tutorial on how to make custom drop down button menu via lightbox on youtube, it is tutorial made by some guy on 'wix community' channel.

I wanted to do the same thing, but unfortunetely. Whenever I create lightbox, everything else on my page dissapears. I can see just lightbox, So I have to delete to be able to edit my page... All I want to have is a lightbox on top of my page with all buttons and content of the page behind the lightbox. I hope You understand me. 

The guy on the video just clicks 'create lightbox' and it shows on top of the page, so he can still see buttons and everything behind it.

whenever I hit 'create lightbox' there is just lightbox and background behind it, that's it. First I thought that maybe lightbox just put other content a little bit down, but I tried scrolling down the page, but suddenly I cant because there is just a lightbox+bg, nothing else.

Thank You in advance for help 
Edd.