Use CSS to mark the current channel on the navigation bar

This article mainly introduces the use of CSS to mark the current channel on the navigation bar. It has a certain reference value. Now I share it with you. Friends in need can refer to

Webpage Production Webjx Article Introduction : The technology of using CSS to mark the current channel on the navigation bar has been around for a long time. It has been introduced in many CSS books, but it is still often asked, so I wrote a simple example to explain it.​​

In fact, the principle is very simple:
1) According to different channels (columns), define ids for the body respectively. For example:
Home page:
Blog channel:
Album channel:
All pages in the channel must define IDs uniformly.
2) The corresponding column of the navigation bar also defines id or class:

<ul id="nav">
<li class="nav_home"><a href="index.html">首页</a></li>
<li class="nav_blog"><a href="blog.html">Blog</a></li>
<li class="nav_album"><a href="album.html">相册</a></li>
</ul>

3) The current position is distinguished by different body ids:

#p_home .nav_home a,
#p_blog .nav_blog a,
#p_album .nav_album a {
……
}

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