Set my project's build to pnpm build and my project's install to pnpm install in Vercel. Checking the build logs I see it using pnpm build and pnpm install. Running pnpm build && pnpm start locally the tailwind styling is there and looks great. When deployed the tailwind classes are on the HTML elements, but there isn't any tailwind styling -- at all.
NextJS 15 Tailwind Vercel
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Additionally, we can see that the globals.css is being served with: