title: Polymer - positioning paper-fab?
body: <p>I'm trying to make a Polymer <code>paper-fab</code> (floating action button) go in the bottom right corner of the screen.  I also want it to disappear on scroll down but then come back on scroll up (like on the Google+ Android app).  How do I do those 2 things? Here is the test site: <a href="http://www.infinitech.org/beta">http://www.infinitech.org/beta</a>.  Thanks a bunch for the help!</p>