It worked right out of the box. Like it says, "simple". And responsive too! Well, 100% responsive when opening the image link. If you resize the browser while the light box is open, it will maintain the same size instead of shrink or expand in real time.
I did not dock a point for this, because it did not advertise that it would function this way.
What it did do, was work right after installing. Other "Responsive Lightbox"s wasted hours of my life trying to get it to work correctly, before I gave up on them.
Thanks for the quality product!