Before I joined I didn't have an issue with my home page, it seems it has lost some of its colo

Before I joined I didn't have an issue with my home page, it seems it has lost some of its colors. And when I click on the dashboard posts the page opens different. The columns are long and wide. I don't know if activating wp 3 super cache has anything to do with that. It has now been deactivated. Could you please, have a look at the site and fix it.