Moving navigation to bottom of home page only

Hi Guys

I have attached a page header to this page https://jeztechs-test.com/ ...how do I move the navigation bar to the bottom of the page such as this example http://www.robertwilson.com ...just need this on the home page.

Maybe I have set the page up incorrectly but cannot find a setting that swaps the nav below the header...have you a css style (or 2) I can use?

Many thanks in advance.
Jeremy