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Editor to share with you what the pseudo elements in css are, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Pseudo element

W3C: the "W3C" column commands which version of CSS the attribute is defined in (CSS1 or CSS2).

Attribute description CSS:first-letter adds extraordinary formatting to the first letter of the text. 1:first-line adds extraordinary names to the first line of the text. 1:before increases in form before the element domain. 2:after adds patterns after the element. two

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