css实现缩进无限嵌套

时间：2022-05-17 21:11:26

使用css实现缩进带背景无限嵌套，支持Ie6，代码如下：

<!DOCTYPE html>

<html lang="en">

<head>

	<meta charset="UTF-8">

	<title>Document</title>

	<style>

*{margin:0;padding:0;}

li{list-style:none;}

.box{width:300px;height:400px;border:2px solid #ccc;margin:10px;position:relative;}

.box li{padding-left:15px;line-height:20px;}

.box a{display:block;}

.box .bg{position:absolute;z-index:-1;left:0;width:300px;height:20px;background:#ccc;opacity:0;filter:alpha(opacity=0);}

.box a:hover .bg{opacity:1;filter:alpha(opacity=100);}

	</style>

</head>

<body>

	<div class="box">

		<ul>

			<li>

				<a href="#"><span class="bg"></span>12</a>

				<ul>

					<li>

						<a href="#"><span class="bg"></span>12</a>

						<ul>

							<li>

								<a href="#"><span class="bg"></span>12</a>

								<ul>

									<li><a href="#"><span class="bg"></span>12</a></li>

									<li><a href="#"><span class="bg"></span>12</a></li>

								</ul>

							</li>

							<li><a href="#"><span class="bg"></span>12</a></li>

						</ul>

					</li>

				</ul>

			</li>

		</ul>

	</div>

</body>

</html>

　　

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