I am new to this theme and have a question about scroll bars. On my PC and Ipad, the multipost page has no horizontal scroll bar, which is what I want. My size for this site is 1250px. I click on a single post page and now I have a horizontal scroll bar on my ipad. Why is the scroll bar not on the multipost page, but is on the single post page?

what theme are you talking about? Atahualpa? Montezuma?
What is the url pointing to your site showing the issue?

The theme I am using is atahualpa

I just started it, but www.missylab.com and if you click on the photo page, it will scroll on a mobile device or ipad.

depending on the width of my window, I get a horizintal scroll bar on ALL your pages.
I see no horizontal scroll on my ipad

How do I get rid of them? Make my page smaller like 900px?