1. The security code isn't centering when the page loads. If you use a
   code like "WW" you can see that it's off by a little bit, but that it
   corrects itself when you resize the window.

2. There's a display glitch (in Firefox only?) as the back of the
   train passes the front of the tram. The tram moves into the
   foreground for a moment and that definitely should not happen.