Orthographic Camera too Big in 2D Game

I have an orthographic camera. It's viewport rect is (0,0,4,5) because I want it to work for the default screen width for a web player at 960 x 600.

It draws the box around what the camera sees like I would expect. However, when I run the game in my browser, the camera sees so much more than what I want it too (both in width and height). In the Game View, the camera is also bigger than shown in the scene view, but not by nearly as much.

What is causing this? I have been stuck on this one for a few hours now.