Thread:Peteparker/@comment-24800939-20160526213823/@comment-122657-20160902190044

It's actually a border with rounded edges specified through html that's laying on top of the image.

The only way you could get it in a normal gallery is to build a template similar to Portal to do so. That would mean you'd have to list images in a sequential order, much like the alternates in the disambig template.

You could always use the Portal template itself too.