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This article mainly introduces "how to understand the class of html". In daily operation, I believe many people have doubts about how to understand the class of html. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts of "how to understand the class of html"! Next, please follow the editor to study!

Class is an attribute in the html tag that defines the class name of the element, corresponding to the class selector in css, syntax ";" classname "specifies the class name of the element. If you need to specify multiple classes for an element, separate the class name with spaces.

The operating environment of this tutorial: windows7 system, HTML5 version, Dell G3 computer.

Class is an attribute in the html tag. In HTML5, the class attribute can be used for any HTML element (it validates any HTML element. But it doesn't have to work.

The class attribute defines the class name of the element.

The class attribute is typically used for classes that point to stylesheets. However, it can also be used in JavaScript (through HTML DOM) to change the class name of the HTML element.

Grammar

Classname: the name of the class that specifies the element. If you need to specify multiple classes for an element, separate the class names with spaces. . The HTML element allows the use of multiple classes.

Naming rules for classname:

Must start with the letter Amurz or amurz

Can be the following characters: (A-Za-z), number (0-9), crossbar ("-"), and underscore ("_")

In HTML, class names are case sensitive

Example:

H2.intro {color:blue;} p.important {color:green;} title 1

Paragraph.

Note: this is a very important paragraph. :)

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