Lock Tailwind version to 3.x because I think 4.x may have broken things

Author: matthew-carroll

.github/workflows/build_website.yml

@@ -19,8 +19,9 @@ jobs:
       - run: dart pub get
 
       - name: Download and prepare TailwindCSS
-        run: | 
-          curl -sLO https://github.com/tailwindlabs/tailwindcss/releases/latest/download/tailwindcss-linux-x64
+        # curl -sLO https://github.com/tailwindlabs/tailwindcss/releases/latest/download/tailwindcss-linux-x64
+        run: |
+          curl -sLO https://github.com/tailwindlabs/tailwindcss/releases/download/v3.4.17/tailwindcss-linux-x64
           chmod +x tailwindcss-linux-x64
           mv tailwindcss-linux-x64 tailwindcss