I am building Javascript widget and each website can integrate that widget on their website. Is there any good approach to isolate styles of widget from website styles? (Note: I am not using iframe) I was reading this blog https://blog.jenyay.com/web-ui-widget/ they have mentioned using on cleanslate for styling any other recommendation or similar approach for this?

Use WebComponents, they work under ShadowDOM and are shielded from the parent styling.

Ok got it