I have been trying to remove what appeared to be a bottom border on an image. I am using Lytebox. Adding a bottom border resulted in the existing "border" being pushed down below the new border. So then I looked for a bottom margin. I didn't find one that is being applied to the images. So I left one image with a border-bottom styled 10px in red. The grey "border" is clearly still there. The second image in the table of images has a negative margin set to -4px. that removes the unwanted bottom "border" I suppose I could add that styling to all the images but it is only happening on the thumbs and I am not sure how to target just the thumbnail images.
I would prefer to resolve the issue by finding why this is happening as it only seems to affect IE8 and IE9 browsers, IE7 is ok. Note affects Opera as well. my website