CSS Template modification

I have a very small project that can be completed within 1-2 hrs. It entails to edit a CSS file of a subdomain to match the main site's appearance - Header & Footer here is the main site [login to view URL] and to sub domain you are required to configure is [login to view URL] I need the background, header, Body and footer to be edited to match the main website so much so that my visitors will not know i am using a different script Optionally, you may be required to integrate main website's [login to view URL] Database to [login to view URL] so much so that my members do not have to create another account with sub domain. Let them be able to just login using their [login to view URL] username and pass Look at this website [login to view URL] I would love the header to be similar to that with the ad section at the top It is not a complicated project so bid reasonably Thanks