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This article mainly introduces "what the class selector in css3 refers to". In the daily operation, I believe that many people have doubts about what the class selector in css3 refers to. The editor consulted all kinds of data and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubt of "what does the class selector in css3 refer to?" Next, please follow the editor to study!

In css3, a class selector refers to a class selector, which allows styles to be specified in a way independent of document elements, describes the style of a set of elements, and can be used in multiple elements. The class selector is represented by the class attribute in HTML and by a dot in CSS. The number shows.

The operating environment of this tutorial: windows7 system, CSS3&&HTML5 version, Dell G3 computer.

In css3, a class selector refers to a class selector, which is one of the most basic selectors.

The class selector allows you to specify styles in a way independent of document elements, describes the styles of a set of elements, and can be used in multiple elements.

The class selector is represented by the class attribute in HTML, and the class selector is represented by a dot in CSS. The number shows:

Html code

The title is centered and the paragraph is centered.

CSS code

.center {text-align:center;}

Note: numbers cannot be used in the first character of a class name! It does not work in Mozilla or Firefox.

Class selectors can be used alone or in combination with other selectors.

.fancy td {color: # f60; background: # 666;}

In the above example, the table cells inside the larger element of the class named fancy display orange text with a gray background. (a larger element named fancy may be a table or a div.)

Td.fancy {color: # f60; background: # 666;}

In the above example, the table cell named fancy will be orange with a gray background.

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