Create a Class to Target with jQuery Selectors

Hello ,
please someone can help me to explain target class in Bootstrap ?

When you see a class or id on an element there is the assumption that there are some css style rules associated. Linters will even notify you that an element has a class that does not appear in any stylesheet.

That is not always the case though. Sometimes you just put a class or an id on an element just so it can be easily selected with jQuery or Javascript. That is what is happening in these Bootstrap challenges

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Thank you i get it :heart_eyes: