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This article mainly introduces the relevant knowledge of how to apply the offspring selector in HTML, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value, I believe you will have something to gain after reading this HTML article on how to apply the offspring selector, let's take a look.

The descendant selector is extremely powerful. With it, you can make tasks that are impossible in HTML possible.

Suppose you have a document with a sidebar and a main area. The background of the sidebar is blue and the background of the main area is white, both of which contain a list of links. You cannot set all links to blue because the blue links in the sidebar are not visible.

The solution is to use a descendant selector. In this case, you can specify the class property with the value of sidebar for the div that contains the sidebar and set the value of the class property of the main area to maincontent. Then write the following styles:

Div.sidebar {background:blue;} div.maincontent {background:white;} div.sidebar a:link {color:white;} div.maincontent a:link {color:blue;}

One aspect that is easily overlooked about descendant selectors is that the hierarchical spacing between two elements can be infinite.

For example, if you write ul em, this syntax selects all em elements that inherit from the ul element, regardless of the depth of nesting of the em.

Therefore, ul em will select all em elements in the following tags:

List item 1 List item 1-1 List item 1-2 List item 1-3 List item 1-3-1 List item 1-3-2 List item 1-3-3 List item 1-4 List item 2 List item 3 on how to use offspring selectors in HTML, this is the end of the article, thank you for reading! I believe you all have a certain understanding of the knowledge of "how to apply the descendant selector in HTML". If you want to learn more knowledge, you are welcome to follow the industry information channel.

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