Better way to run the Tailwind CSS compiler.

The Tailwind command can be defined in a `package.json` and called using `npm run [cmd]`.

```json
"scripts": {
"css-dev": "npx tailwindcss -i ./tailwind.css -o ./public/tailwind.css --watch --minify"
}
```

```sh
npm run css-dev
```

Also the use of the `--minify` flag can generate minified code.