title: Angular-animate with height: auto; doesn't work
body: <p>I want to make animation using angular-animate. My css rules is:</p>
  
  <pre><code>.expanded {
      transition: all ease 0.5s;
      overflow: hidden;
  }
  .expanded.ng-hide {
      height: 0px;
  }
  </code></pre>
  
  <p>If I add, for example, <code>height: 100px</code> to <code>.expanded</code> class, then everything works fine. But how to make it works without <code>height</code> definition? I need this, because the content of <code>.expanded</code> container might be different.</p>