css 简写的动画 animation 属性实例

<!DOCTYPE html>
<html>

<head>
	<meta charset="utf-8">
	<title>css 简写的动画 animation 属性 实例 - 自学教程(runoops.com)</title>
	<style>
		div {
			width: 100px;
			height: 100px;
			background: red;
			position: relative;
			animation: myfirst 5s linear 2s infinite alternate;
			/* Firefox: */
			-moz-animation: myfirst 5s linear 2s infinite alternate;
			/* Safari and Chrome: */
			-webkit-animation: myfirst 5s linear 2s infinite alternate;
			/* Opera: */
			-o-animation: myfirst 5s linear 2s infinite alternate;
		}

@keyframes myfirst {
			0% {
				background: red;
				left: 0px;
				top: 0px;
			}

25% {
				background: yellow;
				left: 200px;
				top: 0px;
			}

50% {
				background: blue;
				left: 200px;
				top: 200px;
			}

75% {
				background: green;
				left: 0px;
				top: 200px;
			}

100% {
				background: red;
				left: 0px;
				top: 0px;
			}
		}

@-moz-keyframes myfirst

/* Firefox */
			{
			0% {
				background: red;
				left: 0px;
				top: 0px;
			}

25% {
				background: yellow;
				left: 200px;
				top: 0px;
			}

50% {
				background: blue;
				left: 200px;
				top: 200px;
			}

75% {
				background: green;
				left: 0px;
				top: 200px;
			}

100% {
				background: red;
				left: 0px;
				top: 0px;
			}
		}

@-webkit-keyframes myfirst

/* Safari and Chrome */
			{
			0% {
				background: red;
				left: 0px;
				top: 0px;
			}

25% {
				background: yellow;
				left: 200px;
				top: 0px;
			}

50% {
				background: blue;
				left: 200px;
				top: 200px;
			}

75% {
				background: green;
				left: 0px;
				top: 200px;
			}

100% {
				background: red;
				left: 0px;
				top: 0px;
			}
		}

@-o-keyframes myfirst

/* Opera */
			{
			0% {
				background: red;
				left: 0px;
				top: 0px;
			}

25% {
				background: yellow;
				left: 200px;
				top: 0px;
			}

50% {
				background: blue;
				left: 200px;
				top: 200px;
			}

75% {
				background: green;
				left: 0px;
				top: 200px;
			}

100% {
				background: red;
				left: 0px;
				top: 0px;
			}
		}
	</style>
</head>

<body>

<p><b>注意:</b> 该实例在 Internet Explorer 9 及更早 IE 版本是无效的。</p>

</body>

</html>