How to use the CSS wildcard selector

This article introduces the knowledge of "how to use CSS wildcard selector". In the operation of practical 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!

CSS2 introduces a new simple selector, the wildcard selector (universal selector), which is displayed as an asterisk (*). The selector can match any element, just like a wildcard.

For example, the following rule can make every element in a document red:

* {color:red;}

This declaration is equivalent to a grouping selector that lists all elements in the document. With the wildcard selector, you can specify the color attribute value of all elements in the document as red with just one keystroke (only one asterisk).

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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