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This article mainly introduces the CSS how to group the selector related knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe that everyone after reading this CSS how to group the selector article will have a harvest, let's take a look.

We probably group either the development of the determiner or the declaration.

If you hope that all H2 elements have a blood background and appear as blue text using a 28-pixel high Verdana font, you might write something like this:

H2 {font: 28px Verdana;} h2 {color: blue;} h2 {background: red;}

But the painstaking defense of the above practice is not high. It is extremely poor when we build a list for an element with multiple styles. Instead, we can group the declarations together:

H2 {font: 28px Verdana; color: white; background: black;}

This is exactly the same as the results of the previous three-row stylesheet.

Note that for fame grouping, it is necessary to use semicolons at the end of each statement. The reader ignores the blank characters in the stylesheet. Only a semicolon is added, that is, approximately without concern, the style is established in the following format:

H2 {font: 28px Verdana; color: blue; background: red;} this article on "how CSS groups selectors" ends here. Thank you for reading! I believe you all have a certain understanding of the knowledge of "how to group selectors in CSS". If you want to learn more, you are welcome to follow the industry information channel.

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