Content spans the width of the body

Good day. I congratulate you for creating such a great theme!

I start this new topic, to consult whether it would be possible to modify some code so that the content spans the width of the body, from the sidebar up to scrollbar.

Attached is a picture to show: https://c5.staticflickr.com/9/8421/29674634596_54a4f1c0f0_b.jpg

The site: https://goo.gl/ztswPw

Thanks for your time!