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This article mainly explains "what is the pseudo-class selector in CSS". The content in the article is simple and clear, easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the pseudo-class selector in CSS".

1. Pseudo-class selector, the same tag has different styles according to its different state. This is called "pseudo-class". Pseudo classes are represented by colons.

For example, div belongs to the box class, which is clear, it belongs to the box class. But what category does a belong to? I'm not sure. Because you need to see what the status is before the user clicks and what the status is after clicking. Therefore, it is called "pseudo-class".

2. Pseudo-class selector is divided into two kinds, static pseudo-class and dynamic pseudo-class.

(1) static pseudo-classes: styles that can only be used for hyperlinks. As follows:

Before the link hyperlink is clicked

After the visited link has been visited

PS: the above two styles can only be used for hyperlinks.

(2) dynamic pseudo class: a style that applies to all tags. As follows:

Hover "hover": when the mouse is over the label

: active "activate": when the mouse clicks on the tab, but does not let go.

: focus is the style when a tag gets focus (for example, an input box gets focus)

Thank you for reading, the above is the content of "what is the pseudo-class selector in CSS". After the study of this article, I believe you have a deeper understanding of what the pseudo-class selector in CSS is, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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