Use Calypso to edit web and hybrid styling. You’ll add a class to the list view, and then create that class in the custom.scss file in your project’s theme folder.
Hi Disha,
For styling an Hybrid App and adding custom CSS you have to add it to the components.json
https://docs.mendix.com/refguide/customizing-hybrid-mobile-apps#2-standard-components-json
Cheers, Andries