title: What transition-property to use for transform?
body: <p>I'm not sure if this is the right way, but I want to spin an element,<br>
  and I know <code>transform: rotate(90deg)</code> &amp; <code>transition-property:all</code> will work, but I don't want to transition <code>all</code> of the transformations<br>.
  What <code>transition-property</code> should I use, and is there a better way to create a spinning animation?</p>