Zero Gravity Theme Update: Everything Center Aligned

I recently updated to the latest version of my theme: Zero Gravity. Since then, the post previews (title and content), the widget titles on my side bar, as well as the full text in every blog post, has been center aligned instead of left aligned. I have gone into my style.css file and changed everything that said “text-align: center” to read “text-align: left” and it made no difference. I am now at a loss for next steps.

Here is my site: http://www.mamanonthetrail.com

Thank you!