CSS problem

Hello!
We are using latest 3.80 nopcommerce, since we installed it and updated theme we get some problem with css, you can see it in image below.
In 3.70 we got no problem and managed how to correct it but in new version CSS was generated via plugin, so we cant edit it, what we need to do?
http://my.jetscreenshot.com/demo/20161117-gznv-50kb

Hello,
please open a support ticket and post a link to your website so we can inspect the problem.

Regards