title: Rotating effect not working after animation
body: <p>I want to rotate the inner circle when hover over outer circle, its works fine if I don't apply animation to it. But if I apply animation, inner circle does not rotate on hover. My animation makes inner circle rotate once only. </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>body, html {
    height: 100%;
  }
  
  .main-content {
    position: relative;
    height: 100%;
  }
  
  .box-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }
  .box-container ul {
    list-style: none;
  }
  .box-container .box {
    display: inline-block;
    height: 100px;
    width: 100px;
    background: pink;
    border-radius: 50%;
    text-align: center;
    position: relative;
    cursor: pointer;
  }
  .box-container .box span {
    transform-origin: 0% 0%;
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    margin-top: -20px;
    margin-left: -20px;
    display: block;
    width: 40px;
    height: 40px;
    background: #58C9B9;
    color: #fff;
    line-height: 40px;
    text-align: center;
    transform-origin: calc(100% - 20px) calc(100% - 20px);
  }
  .box-container .box:hover span {
    background: #4F86C6;
    transform: rotateY(360deg);
    transition: .5s;
  }
  
  .animate1 {
    animation: animate .5s ease-in-out  forwards;
  }
  
  .animate2 {
    animation: animate .5s ease-in-out .5s  forwards;
  }
  
  .animate3 {
    animation: animate .5s ease-in-out 1.0s  forwards;
  }
  
  @keyframes animate {
    0% {
      opacity: 0;
      transform: rotateY(0deg);
    }
    100% {
      opacity: 1;
      transform: rotateY(360deg);
    }
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="main-content"&gt;
      &lt;div class="box-container"&gt;
        &lt;ul class="list-unstyle list-inline"&gt;
            &lt;li class="box "&gt;&lt;span class="animate1"&gt;20%&lt;/span&gt;&lt;/li&gt;
            &lt;li class="box "&gt;&lt;span class="animate2"&gt;40%&lt;/span&gt;&lt;/li&gt;
            &lt;li class="box "&gt;&lt;span class="animate3"&gt;50%&lt;/span&gt;&lt;/li&gt;
        &lt;/ul&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  &lt;div&gt;</code></pre>
  </div>
  </div>
  </p>