Install Tailwindcss on custom app (not via CDN)

I would like to install Tailwindcss on my custom app but not via CDN.
i need to install some js packages such as postcss and autoprefixer but i don’t know how to do this via my custom app.
If i set up a node project within my app directory, the module will be loaded at build time ?

Hi, did you find out how to do this?

Nose is already set up in new apps (with yarn) by default. From your app’s root, just install packages as normal.