Here is the Gallery.
As I said I have made it into a symbol.
You should be able to change the look as to need. To use as is you Must add Jquery, Have scale scene width and height checked on. And pin top and sides to edge. I would also not put the symbol at the very top of the scene or the expanding box will clip.
You click on the images to expand and a click on the expanded image to shrink back.
A rudimentary slide show. and arrow buttons to nav.
The images can be place in a folder named images which needs to be place on the same level as the exported html project.
The slideshow and expand should be easy enough to disable if you need to do so.
I may when I get a min put a config in to do this with a true or false setting in the project.