I have a website that's pretty much completed but I would like to add one small feature. When a customer adds an item to their shopping cart, a blue box appears below the shopping cart that contains the current price total in the shopping cart (see image #2). I would like that box to slide down the page when the customer scrolls down the page. It should slide down slowly and subtly to as not to be too distracting. See image 3 to get an idea about what it should look like. Clicking on the box currently takes the customer to the shopping cart. It should still do that when it's slid down the page.