Change lightbox caption position?

Hello dear support,

I have tested several galleries for a project of mine and so far like your gallery the best, the only thing I would have to change is the position of the caption of the images in the lightbox. The text should be below the image in the middle. I have had a look at the js files but the format is unreadable.

Can you please tell me how reposition the caption in the lightbox, or where I can manipulate the lightbox layout?

Thank you.