Fix ligthbox position in masonry gallery

You can easily add your CSS code. Either use the Please use the code button above the edit window, and select CSS as the language type, or manually add <pre lang="CSS"></pre> with the code in between the two tags.

I added the pre tag in which you can paste your current CSS code. Please use the green "Improve question" widget.

Mmmm, seems you want us to write an entire css block for you, what Richard above asked is that you add your current css code where the lightbox is inside your image tag so we can make sense of it all to help you correct your code.