title: How to prevent css3 animation reset when finished?
body: <p>I write a css3 animation and it is only performed once. The animation works well, but it will reset when the animation finished. How can I avoid this, I want to keep the result instead of reset it.</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-js lang-js prettyprint-override"><code>$(function() {
    $("#fdiv").delay(1000).addClass("go");
  });</code></pre>
  <pre class="snippet-code-css lang-css prettyprint-override"><code>#fdiv {
    width: 10px;
    height: 10px;
    position: absolute;
    margin-left: -5px;
    margin-top: -5px;
    left: 50%;
    top: 50%;
    background-color: red;
  }
  
  .go {
    -webkit-animation: spinAndZoom 1s 1;
  }
  
  @-webkit-keyframes spinAndZoom {
    0% {
      width: 10px;
      height: 10px;
      margin-left: -5px;
      margin-top: -5px;
      -webkit-transform: rotateZ(0deg);
    }
    100% {
      width: 400px;
      height: 400px;
      margin-left: -200px;
      margin-top: -200px;
      -webkit-transform: rotateZ(360deg);
    }
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"&gt;&lt;/script&gt;
  
  &lt;div id="fdiv"&gt;&lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Here is the <a href="http://jsfiddle.net/KCbFf/" rel="noreferrer">demo</a>.</p>