Moves filter form in front of .projects container div

I'm not sure if anyone else had this issue, but I can't click into the form on the [projects page](http://okfnlabs.org/projects/) to change the filter criteria.  It seems the margin-top: -50px on the .projects div that follows prevents click-through.  Targeting the form and moving it in front of the .projects div seems to work for me on the latest Firefox and Chome, though there are probably a variety of ways to solve this.