What are the advanced selectors in CSS

This article introduces the knowledge of "what are the advanced selectors in CSS". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Descendant selector: the definition is separated by a space.

.div1 p {color: red;}

Spaces represent future generations. .div1 p represents all p of the descendants of .div1.

2. Intersection selector: when defined, it is closely linked.

When you define an intersection selector, the two selectors are closely connected. It usually starts with a signature, such as div., and then p.special.

Note: the intersection selector has no spaces. Div.red (intersection selector) without spaces does not mean the same as div.red (descendant selector) with spaces.

3. Union selector: the definition is separated by a comma.

All three basic selectors can be put in.

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