12变大 

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>变大</title>
	</head>
	<style>
		.box{
			width: 200px;
			height: 200px;
			margin: 200px auto;
			background: royalblue;
			animation: fangkuai 4s alternate infinite;
		}
		@keyframes fangkuai{
			from{transform: scale(0);}
			to{transform: scale(1);}
		}
	</style>
	<body>
		<div class="box"></div>
	</body>
</html>

　　

posted @ 2020-11-27 08:56  卿家尘归尘  阅读(56)  评论(0)    收藏  举报