where we have import tailwindcss in which css file app.css or index.css

[suyash012]

where we have import tailwindcss in which css file app.css or index.css

[wongjn]

The Tailwind paradigm is to only have one CSS file. So consider choosing one and deleting the other. It depends on a project-by-project basis. You haven't provided your project so I can't give advice on which one is the most appropriate to use, so you will need to use your own judgement.