Sidebar Different on Pages

Using sydney theme.

link to my website: https://myancientwisdom.com/blog/

I added a background image to my pages and every page looks fine except the BLOG page. Somehow it cut off the right edge of the sidebar, leaving no white space. I want it to look like the sidebar on me Disclaimer page.

I have really been having many problems with my sidebar and wonder if a css I have added is screwing things up…I don’t have many, just 5 or 6. Also, I feel that the sidebar has very limited options as far as customization, is this due to the theme I selected?