dom-module iron-swipeable-pages has style outside template

[michael-learns]

iron-swipeable-pages is not currently working for me. I get this error:

dom-module iron-swipeable-pages has style outside template

I've loaded the iron-swipeable-pages templates like so:

<link rel="import" href="../../bower_components/iron-swipeable-pages/iron-swipeable-pages.html">

and used it like so:

<iron-swipeable-pages selected="0">
  <div>One</div>
  <div>Two</div>
 <div>Three</div>
</iron-swipeable-pages>