所属分类：web前端开发
示例
现场演示
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<html>
<head>
<style>
div {
background-color: gray;
animation: myanim 3s infinite;
color: white;
}
@keyframes myanim {
30% {
margin-left: 20px;
}
}
</style>
</head>
<body>
<h2>Heading One</h2>
<div>
This is demo text.
</div>
</body>
</html>