1) unless you did "other" modifications out of this topic I see no reason for these errors based on the code on first page. Please be more specific which code you are referring to. Also, its a good idea whenever you see error messages, quote the exact error message (as you did) AND provide part of code from the file where error occur 10 lines above and 10 lines below the error.
2) when it comes to styles it is very hard to envision what one is talking about without seeing it on a screenshot or even better on the site.