Lightbox, is that still a thing?

Well I needed a simple, fullscreen, css based, touch/keyboard friendly lightbox/slideshow and here it is! The script takes in a selector, queries it for all items and creates a lightbox/slideshow out of them.

this is the most basic version. The next version will be animated, probably with the popmotion library.

Any tips to make this script a bit more 'pluggable' are most welcome in the comments!