Fixup new version of tailwindcss

Author: kordianbruck

package.json

@@ -50,6 +50,7 @@
 	},
 	"devDependencies": {
 		"@biomejs/biome": "2.1.1",
+		"@tailwindcss/postcss": "^4.1.13",
 		"@types/node": "^24.3.1",
 		"@types/react": "^19.1.12",
 		"@types/react-dom": "^19.1.9",