You can see on the right hand side there is a black button that says “Executive Summary”. This is positioned correctly, and looks right, but I need it to “grow”, for lack of the correct term, and transition on mouseover just like it does here:
You haven’t really grasped how they are going about this. Firstly, it’s all done on the <a> element, rather than using a div. And the only real thing being done is that the top negative margin is removed on hover. There’s a nice transition because of the added CSS3 transition code. Here’s the important code extracted (which is a working demo):