page length doesn't extend to the bottom after making sidebar div absolute

I wanted to put the sidebar a little outside the main page so that it looks a bit nicer. But after I set the sidebar position to absolute and moved it appropriately, the main page content has become shorter. It doesn’t extend throughout the height of the sidebar.

I tried playing and making #page or #primary divs relative but it doesn’t work. I am using the twenty eleven theme.

here’s the link to my webpage: https://www.researchverse.com

To move the sider bar I used

#secondary {
	position: absolute;
	margin-left: 75%;
}

please help!

[please do not bump]