How to add classes based on some condition

Summary:

Hi Experts

I want to add few css classes to component like input text field based on some condition like if the screen size is medium or large but I want to add few other classes foe same component always irrespective of condition.

always show class = oj-sm-2, oj-md-4, oj-flex-item => always

hide classes = oj-panel

(above classes names i have provided just to convey the problem statement.) Please help me

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