Sidebar pushed to the bottom

[xtricks]

My sidebar has been pushed to the bottom of my entries (I guess because the box that holds my entries is too large to allow the sidebar to fit?). However, this is new and unexpected and I've not made any changes to my journal. How do I get my sidebar to show up on the side, not squished to the bottom?

I gather my main box has to be narrower?

My page: http://xtricks.dreamwidth.org/