[CSS] Pure CSS realizes three-level navigation (template)_html/css

[CSS] Pure CSS realizes three-level navigation (template)_html/css_WEB-ITnose

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Release： 2016-06-24 11:42:55

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I used to think that the implementation of cascading navigation should be very simple, just use the hover attribute of CSS to implement it, so I didn’t pay too much attention to practice. But in a recent interview, when I was asked this question, I realized that there are many things that cannot be taken for granted. It is not only OK to know the general idea, but also requires actual hands-on ability.

Later, I actually implemented the cascading menu and took this opportunity to make it into a template to learn with everyone.

The following is the HTML part:

<!DOCTYPE html><html><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><title>纯css级联导航</title></head><body>    <div class="main">    	<ul class="one-nav">    		<li>    			<a href="javascript:;">一级导航</a>    			<ul class="two-nav">    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    			</ul>    		</li>    		<li>    			<a href="javascript:;">一级导航</a>    			<ul class="two-nav">    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    			</ul>    		</li>    		<li>    			<a href="javascript:;">一级导航</a>    			<ul class="two-nav">    				<li><a href="javascript:;">二级导航</a></li>    				<li>    					<a href="javascript:;">二级导航></a>    					<ul class="three-nav">    						<li><a href="javascipt:;">三级导航</a></li>    						<li><a href="javascipt:;">三级导航</a></li>    						<li><a href="javascipt:;">三级导航</a></li>    					</ul>    				</li>    				<li><a href="javascript:;">二级导航</a></li>    			</ul>    		</li>    		<li>    			<a href="javascript:;">一级导航</a>    			<ul class="two-nav">    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    			</ul>    		</li>    		<li>    			<a href="javascript:;">一级导航</a>    			<ul class="two-nav">    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    			</ul>    		</li>    		<li>    			<a href="javascript:;">一级导航</a>    			<ul class="two-nav">    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li><a href="javascript:;">二级导航</a></li>    				<li>    					<a href="javascript:;"><二级导航</a>    					<ul class="three-nav">    						<li><a href="javascipt:;">三级导航</a></li>    						<li><a href="javascipt:;">三级导航</a></li>    						<li><a href="javascipt:;">三级导航</a></li>    					</ul>    				</li>    			</ul>    		</li>    	</ul>    </div></body></html>

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CSS part:

body,div,ul,li,a{margin: 0;padding: 0;text-decoration: none;}	/* 一级导航 */	.one-nav li{list-style-type: none;float: left;width: 16.57%;text-align: center;background-color: #3391E6;border-right: 1px solid white;cursor: pointer;height: 30px;line-height: 30px;}	.one-nav li:nth-last-child(1){border-right: none;}	.one-nav li a{color: white;}	.one-nav li:hover .two-nav{display: block;}	.one-nav li:hover{background-color: #4260D7;}	/* 二级导航 */	.two-nav {display: none;}	.two-nav li{width: 100%;}	.two-nav li:hover .three-nav{display: block;position: relative;}	/* 三级导航 */	.three-nav{position: absolute;width:100%;left: 100%;bottom: 100%;}	/* 最右边的三级导航显示在左边 */	.one-nav li:nth-last-child(1)  .two-nav li  .three-nav li{width: 100%;position:relative;right: 200%;}

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The rendering is as follows:

The example is relatively simple, but often the simpler things require more down-to-earth practice and experience, life is like this ,mutual encouragement.

Author: Zhizhi

Sign: The road is long and long, I will search up and down.