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    copied!<p>it's really bug webkit animation, i think u need use this code</p> <pre><code>&lt;html&gt; &lt;body&gt; &lt;style type="text/css"&gt; #backgroundContainer { position: absolute; background-repeat: no-repeat; background-position: top center; background-color: #CCC; background-attachment: fixed; background-image:url("https://appharbor.com/assets/images/stackoverflow-logo.png") ; border-top: solid 10px #000; color: #fff; font-size: 14px; font-family: "Segoe UI", Verdana, Helvetica, Sans-Serif; margin: 0; padding: 0 25px; height:500px; width:100%; -webkit-animation: moveUpDown 20s infinite linear; z-index:6; } @keyframes moveUpDown { 0% { background-position-y: 25%; } 50% { background-position-y: 100%; } 100% { background-position-y: 25%; } } @-webkit-keyframes moveUpDown { 0% { background-position-y: 25%; } 50% { background-position-y: 100%; } 100% { background-position-y: 25%; } } .select{ position: relative; z-index: 10; } &amp;lt;/style&amp;gt; &amp;lt;div style="position:relative; z-index:9;"&amp;gt; &amp;lt;div id="backgroundContainer"&amp;gt; &amp;lt;/div&amp;gt; &amp;lt;div class="two"&amp;gt; &amp;lt;select class="select"&amp;gt; &amp;lt;option class="one" value=""&amp;gt;-- Select a Test Case --&amp;lt;/option&amp;gt; &amp;lt;option class="one" value="1"&amp;gt;Test1&amp;lt;/option&amp;gt; &amp;lt;option class="one" value="2"&amp;gt;Test2&amp;lt;/option&amp;gt; &amp;lt;option class="one" value="3"&amp;gt;Test3&amp;lt;/option&amp;gt; &amp;lt;option class="one" value="4"&amp;gt;Test4&amp;lt;/option&amp;gt; &amp;lt;/select&amp;gt; &amp;lt;/div&amp;gt; &amp;lt;/div&amp;gt; &lt;/html&gt; &lt;/body&gt; </code></pre> <p>also</p> <p>i try use this:</p> <p>animation-play-state:paused;</p> <p>-webkit-animation-play-state:paused; /* Safari and Chrome */</p> <p>it's not rezone for select element</p>
 

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