remove border around image

If you look here

http://www.kog.it/sito/

you’ll notice that there is a border around the check image. How can I get rid of it?

I’ve tried to modify your css changing

.rpwe-thumb {border: 0px solid #EEE!important;}

with no luck…

Tanks!

https://ww.wp.xz.cn/plugins/recent-posts-widget-extended/