css animation z-index 实例 - 自学教程(runoops.com)

<!DOCTYPE html>
<html>

<head>
	<meta charset="utf-8">
	<title>css animation z-index 实例 - 自学教程(runoops.com)</title>
	<style>
		div {
			position: absolute;
		}

#container div {
			background-color: lightblue;
			border: 1px solid #333333;
			width: 100px;
			height: 100px;
			opacity: 0.5;
		}

div#myBox {
			opacity: 1;
			background-color: coral;
			z-index: 1;
			-webkit-animation: mymove 5s infinite linear;
			/* Chrome, Safari, Opera */
			animation: mymove 5s infinite linear;
		}

/* Chrome, Safari, Opera */
		@-webkit-keyframes mymove {
			50% {
				z-index: 5;
			}
		}

/* Standard syntax */
		@keyframes mymove {
			50% {
				z-index: 5;
			}
		}
	</style>
</head>

<p>z-index 属性支持动画效果。</p>
	<p><b>注意：</b>Internet Explorer 9 及更早 IE 版本不支持 CSS 动画。</p>

<p>逐步改变 "myBox" 的 z-index 属性 从 1 到 5:
	<p>
	<div id="container">
		<div id="myBox">myBox</div>
		<div style="top:20px;left:20px;z-index:1;">z-index 1</div>
		<div style="top:40px;left:40px;z-index:2;">z-index 2</div>
		<div style="top:60px;left:60px;z-index:3;">z-index 3</div>
		<div style="top:80px;left:80px;z-index:4;">z-index 4</div>
	</div>

</body>

</html>