Page layout

Posted 22 January 2013 - 10:19 AM

Hello I've seen this layout in certain websites where the page's <body> width and height are fixed to the actual screen or monitor size and when you scroll 'down' or 'up' only the <div> centered inside the <body> scrolls not the <body> itself.
I dunno if anyone can understand my explanation but I want to implement something like that but do not know how and would really appreciate it if someone could help me out.

I use visual studio 2012 with c#.