Single Blog Post – Full Width

Hello! First of all, I love your theme and I have got many compliments on the website, thanks to your design.

In any case, here is my situation and I’m hoping it makes sense:

If I create a blog post and use the no-sidebar option, the post is displayed, but the content is centered on the page and only takes up what looks to be 40-50% of the overall page. I was comparing using the default editor vs. the advanced editor which I’ve done in the past. Anyways – I would prefer this method and some of the text is displayed on the blog page whereas it does not seem to be using the other method. Is there a way to increase the width of the single blog post page if setting the sidebar to none?

Thanks!