The navigation buttons are not appeared in lightbox 2

Q: Dear Support,

I've been testing the Visual LightBox in Chrome and Firefox. I don't know why but
there are no navigation arrows on either side, although when you hover the mouse over where they should be it still turns into the hand and is clickable to advance to the next slide.
Any ideas?

A: Probably, you changed the location of .css files, that's why the arrows are not displayed.
Please, check it.