I did a filtering. There are 5 categories. Whichever card I press, information is listed according to that card. When I press that card, I want the class to be added and the color to change. How can I do it ?
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                    PLease show some code. It's very difficult to answer your coding question with no code shown. – Chris Barr Jun 23 '23 at 04:01
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                    Does this answer your question? [Angular ngClass and click event for toggling class](https://stackoverflow.com/questions/44535515/angular-ngclass-and-click-event-for-toggling-class) – Adrian Kokot Jun 23 '23 at 08:04
 
    