I have been using this style for the past couple months without any problems. I'm suddenly unable to scroll down. I can't scroll down through my list of "Labels" on the left side of the page, and I can't scroll down to read longer emails. I have even upgraded to the latest version and the problem persists. When I remove your user-style and revert to the new Gmail (which I hate), I am once again able to scroll down. I am using the latest version of Mozilla Firefox.