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Question

Please someone should give me real explaination about this tag I mean real explanation what it is use for..please don't recommend to any site I need an explanation from a real person thank you

Answer 1

If you intend to use it, then the site doc writing by a "real person" has in-depth instruction.

https://fontawesome.com/how-to-use/on-the-web/referencing-icons/basic-use