Lots of work on upgrading to Tailwind CSS 4. Still more to go. Need to fix Modals everywhere.

src/app.css

@@ -9,15 +9,18 @@
 @import '@skeletonlabs/skeleton/themes/modern';
 @import '@skeletonlabs/skeleton/themes/wintry';
 
-@source '../../node_modules/@skeletonlabs/skeleton-svelte/dist';
+@source '../node_modules/@skeletonlabs/skeleton-svelte/dist';
 
 
 /* Add your theme import for your theme: "osit-custom-theme" here */
-@plugin '@tailwindcss/forms';
-@plugin '@tailwindcss/typography';
+/* @plugin '@tailwindcss/forms'; */
+/* @plugin '@tailwindcss/typography'; */
 
-@import "tailwindcss/preflight";
-@tailwind utilities;
+
+/* @import "tailwindcss/theme.css" layer(theme); */
+/* @import "tailwindcss/preflight"; */
+@import "tailwindcss/utilities.css" layer(utilities);
+/*@tailwind utilities;*/
 
 
 /* Register a Custom Themes */