How does CSS link two class selectors together

This article introduces the knowledge of "how CSS links the two class selectors together". 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!

By linking the two class selectors together, you can select only the elements that contain both these class names (in any order of class names).

If a multi-class selector contains a class name that is not in the list of class names, the match will fail. Take a look at the following rules:

.important.urgent {background:silver;}

As expected, this selector will only match p elements that contain the words important and urgent in the class attribute. Therefore, if there are only the words important and warning in the class attribute of a p element, there will be no match. However, it matches the following elements:

This paragraph is a very important and urgent warning.

What is the basic syntax of css? the basic syntax of css is:

1. The css rule consists of a selector and one or more declarations.

2. Selectors are usually HTML elements that need to be styled

3. Each declaration consists of an attribute and a value

4. Attributes and attribute values are separated by colons.

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