I have had a request to create website navigation like the menus found here: http://www.cnet.com/

Not the picture links, but the links at the top of the page (text.) When you hover over the categories a full width menu appears. I have tried creating this in 365 using layers and I can make a hover layer appear but it disappears when the mouse leaves the link.

Any thoughts to accomplish a menu of this style in 365?