Support for Tailwind 4

[jadengis]

Tailwind v4.0 will be moving out of beta this week, and contains some big changes from the v3 version. These changes will be interesting to Elixir / Phoenix users as Tailwind no longer requires javascript configuration. All customizations for your tailwind theme can be done purely in your main CSS file. It think this meshes well with Phoenix's approach to minimizing the JavaScript required to build an application and should further simplify the setup for new Phoenix applications.

I was wondering if there was any plan to support Tailwind 4 officially.

[SteffenDE]

There is an open PR: #103

So yes, the plan is to move new projects over to v4 at some point :)