I am new on WordPress. I was trying to add a tag from PayPerPost Tool and have completely fucked up my blog's layout. Now, even though I try to change to a new theme, the new theme's messed up too. I don't really know CSS but i checked the codes and nothing seems to be wrong with it. I have already taken out the html tag from PayPerPost, so technically, the layout should go back to normal but it's not.
PLEASE. PLEAAAASE HELP!