The shadow under the tabs doesn't go all the way to the edge

[seveneightn9ne]

Ew:

[mlsteele]

You could fix this using multiple box shadows.
e.g. box-shadow: 0 2px 0px -0px rgba(0, 0, 0, 0.2), 0 1px 0px -0px rgba(0, 0, 0, 0.1);
Since this only extends 3 or so pixels down, manually grading 2 or 3 box shadows would work.