Go over to the browser and refresh it. Now, when you look at this image of Jaws, you really wouldn't see any noticeable difference:
However, a quick inspection shows that a @2x image is being served, but it's being constrained to a size of 200 x 200, so you can see that the original image is 400 x 400, but it's showing as 200 x 200:
Because of our foundation of responsive design, the immediate containing element .figure already has a width set of 23.958333333333 percent (as shown in the following code), which ...
