Introduction and example usage of CSS Union Selector

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1. Set attributes for the tags selected by all selectors.

Format:

Selector 1, selector 2 {attribute: value;}

2. The union selector must be used to connect. The selector can use the tag name / id name / class name.

Example

The use of union selector / * union selector, with two tags separated by commas * / # div_01,.c_01,div {background-color: # 9ACD32 * width: 200px: 200px} this is the first div

This is the p label.

This is the second div.

This is the p label.

This is the third div.

This is the p label.

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