[Plugin: WP-PageNavi] It is looking very ugly in full-width framework

I have thesis theme. I have enabled full-width html frame word and wp-pagenavi is looking very ugle.

Here are the screen shots.
1] Use pagenavi-css.css enabled -> https://img411.imageshack.us/img411/4250/pagenavicss.png
2} Use pagenavi-css.css disabled -> https://img180.imageshack.us/img180/4118/pagenavinocss.png

Here is the link to my blog https://brijux.com

Also, I see that Quick Sprout also uses this plugin and its looking really beautiful there.

Here is how it looks on quicksprout.com -> https://img213.imageshack.us/img213/9753/qsprout.png

How can I modify plugin to look like this? Thank you in advance!

https://www.ads-software.com/extend/plugins/wp-pagenavi/