Sidebar Is Under Posts in Chrome and IE

I’m not sure exactly what has happened…or when it happened, but sometime after I created a new menu (a footer menu and another header menu), my sidebar gets bumped under the posts when you view it in Chrome, or IE. It looks great in Firefox 🙂

Looks like this:
http://sevenfarmgirlsisters.com/wp-content/uploads/2015/03/Blog.jpg

I’ve looked for extra <div> tags, I’ve deactivated and reactivated all of my plugins, I’ve read and read and read and can’t figure out what I did wrong 😛 🙂

I have a Child Theme of 2012 that I’ve been working on. I installed the Parent 2012 and the sidebar is where it’s supposed to be. When I installed my Child 2012, it went back to being messed up, so clearly it’s something I did 🙂

Maybe it has nothing to do with the menus, I don’t know, but that’s about the same time I started noticing that.

Thank you for any help!

The site I’m working on is http://cathyflorence.com