Look in your Settings --> Appearance (where you tried the Classic Theme). Notice how there's a lot of CSS in the Custom Theme text box. Just click "Reset Theme".
The OP's probably figured this out, but just thought I'd share for anyone else who stumbles upon this issue.
Look in your Settings --> Appearance (where you tried the Classic Theme). Notice how there's a lot of CSS in the Custom Theme text box. Just click "Reset Theme".
The OP's probably figured this out, but just thought I'd share for anyone else who stumbles upon this issue.