I'm trying to make a navbox of sorts for my main page with images in a gallery, is there a way to make the images' outlines transparent? Of course, I could just use the wiki's background colour as the gallery's border colour, but the existence of both dark and light modes mean that one side would always view something. This article states that, assuming I have a 0 in the fourth slot of the RGBA code, it should be transparent, but that just displays the equivalent to rgba(255,255,255,1) instead, which isn't my intention. Does anyone know how to fix this?
For extra details, here is my code, perhaps there's something wrong with it instead:
Thanks!