Content Image Alignment

Another question and then I’m done for the day (hah)…

On the test site I’ve been working on, the content images are center aligned which is how I like it.

Test site: https://peachypolish.com/test/wordpress/

But on my actual site, the content images are left aligned and I can’t for the life of me figure out how to fix it.

Regular site: https://www.peachypolish.com/

Thanks!