Blog Sidebar help

Hello! I added the CSS: #primary { width: 100%; } to my website, www.commishcollege.com, to make the bbPress forums to fill the width of the page, however, I'd like my blog page specifically (www.commishcollege.com/blog) to still have the sidebar on the right. I adjust the page's individual layout to ensure that it is sidebar right, however, as you can see, the sidebar is located below all the posts. Any way to move the sidebar back up on only the blog? Thanks!