Increasing Width of Page

Hi,
I’m relatively new to this and have been working on a website for my employer. The last thing I want to accomplish is increasing the width of the page (after having removed the sidebar). There seems to be an invisible wall on the right where the sidebar used to reside. When I center things, they in fact look skewed to the left.

Theme: Gommero
Url: https://www.pdxwine.net
Example of skewed text (https://www.pdxwine.net/contact