速度动画源码
<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<title>速度动画</title>
<style>
body,div,span{
margin: 0;padding: 0;
}
#div1{
width: 200px;
height: 200px;
background: red;
position: relative;
left: -200px;
top: 0;
}
#div1 span{
width: 20px;height: 50px;
background: blue;
position: absolute;
left: 200px;
top: 75px;
}
</style>
</head>
<body>
<div id="div1">
<span id="share">分享</span>
</div>
</body>
</html>
