filp/whoops — pull request #40 by bobdenotter (2013-05-02 12:52:03+00:00)
Title: Make sure 'whoops' error screen displays at top-left.

If the page's output has already been started before whoops intercepts an error, the whoops error screen might be positioned outside of the viewport. You can't see it then, because of the `position: fixed`. By adding a `top: 0; left: 0;`, we ensure that it's visible.