title: CSS unhover property
body: <p>Im trying to animate a round border, that becomes square when you hover, and goes back to a circle after you unhover. Despite my best efforts, i can't seem to make it work. Here is what i have so far.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>@keyframes mymove {
    from {
      border-radius: 100% 100%;
    }
    to {
      border-radius: 0px, 0px;
    }
  }
  
  @keyframes mymoveback {
    from {
      border-radius: 0px 0px;
    }
    to {
      border-radius: 100%, 100%;
    }
  }
  
  .testButt {
    width: 100px;
    height: 100px;
    background: red;
    position: relative;
    -webkit-animation: mymove 3s;
    /* Safari 4.0 - 8.0 */
    -webkit-animation-fill-mode: forwards;
    /* Safari 4.0 - 8.0 */
    animation: mymoveback 3s;
    animation-fill-mode: forwards;
  }
  
  .testButt:hover {
    -webkit-animation-fill-mode: forwards;
    animation: mymove 2s;
    animation-fill-mode: forwards;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;br&gt;&lt;br&gt;&lt;br&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
  &lt;div class="testButt"&gt;
    &lt;br&gt;&lt;br&gt; &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;Log In
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>