Why does my animated .gif image look awful?

Thanks to all the wonderful postings on how to load up and align images, I have managed to do a lot from scrolling through previous posts.

If anyone could have a look at my blog
https://www.betterbusinessreport.com/wordpress and make any suggestions as to
why my image (animated gif) under the websites of interest heading, in the side bar looks terrible it would be much appreciated.

Many thanks