Change catagory links

Hey I have a question that I found asked and unresolved a year ago

older post

I am using wordpress as a single page portfolio. I would like to change the category link in the nav menu to point to the site root, instead of category 3, because it resets the styling for the page once the link is clicked.

In another words, my blog feed is my index page, and has the css the way I want it. Once the link for the Category I have everything under is clicked, it messes up the styling.

Is there either another workaround for this, or a way to make the link in the nav menu point back to

http://www.urlhere.com, instead of pointing to
http://www.urlhere.com/?cat=3