chore(examples): complete the migration to Tailwind 4 (#3861)

The tailwind_csr example was not working yet with version 4, and the
tailwind_actix example still had the no-longer-needed config file.

This also brings the three tailwind examples back in sync, mostly. I
don't know why the axum example has a packages.json and
packages-lock.json file, to be honest.

Author: nnmm

examples/tailwind_actix/Cargo.toml

@@ -57,7 +57,7 @@ site-pkg-dir = "pkg"
 # The tailwind input file.
 #
 # Optional, Activates the tailwind build
-tailwind-input-file = "style/tailwind.css"
+tailwind-input-file = "input.css"
 assets-dir = "public"
 # The IP and port (ex: 127.0.0.1:3000) where the server serves the content. Use it in your server setup.
 site-addr = "127.0.0.1:3000"

examples/tailwind_actix/style/tailwind.css renamed to examples/tailwind_actix/input.css

@@ -4,7 +4,7 @@
     <meta charset="utf-8" />
     <link data-trunk rel="rust" data-wasm-opt="z" />
     <link data-trunk rel="icon" type="image/ico" href="/public/favicon.ico" />
-    <link data-trunk rel="tailwind-css" href="/style/tailwind.css" />
+    <link data-trunk rel="tailwind-css" href="input.css" />
     <title>Leptos • Counter with Tailwind</title>
   </head>
 

examples/tailwind_actix/tailwind.config.js

@@ -0,0 +1 @@
+@import "tailwindcss";