Padding for blockquotes in inner side-bar

I have been battling the whole day now to fix the quote that a testimonials widget posts on the front page of my site. The quote box is too narrow. It doesn't matter what padding I change it just doesn't budge. I have investigated all the theme options and changed them but none work.
I also looked at the source but there is too much for me to understand.
I am new to this and I really need help. I love the theme and would like to get to know how to use it more.
My site is http://wisemanconcept.com
Please can you look and tell me where I am going wrong. Widget or theme?