I have a WSS 3.0 environment that we are migrating to SP2013 and the upgrade went as planned (and somewhat expected). We have a few sites that were apparently customized when it was WSS 2.0 and I am unable to make the default.aspx page look normal. At this point, I do not care about customizations, I just want the page to look like SP2013 and I have tried resetting the master page and the custom master page back to default, as well as deleting the default.aspx page and copying from another site that looks normal and setting it as the home page. This has not worked. Apparently, the styling is coming from somewhere else. Can someone tell me how to get the default page to look normal (I don't care about the content, just a blank page would be fine with me) or what else I can do to get this working properly?