[Plugin: NextGEN Gallery] IE9 borders thumbnails and firefox doesn't

I have found that Internet Explorer 9 displays thumbnail pictures (that I have added into a page/post) with a black border around them but when I use fire fox they do not show. (just the picture with a white background).

I prefer them NOT to show a border as I have white background in the pictures and it looks much cleaner.

https://staceyjanesnappycakes.com.au/baby-nappy-cakes

Is there a function I should be turning on or off to make this work?

Thank you for your time.

https://www.ads-software.com/extend/plugins/nextgen-gallery/