fix: Final restoration with port 80

✅ COMPLETED:
1. Dockerfile uses port 80 (astro preview)
2. BaseLayout imports globals.css
3. globals.css with Tailwind v4 @theme syntax
4. index.astro has Header, Footer, FixedContact
5. All image references fixed to existing files
6. Hero uses hdpe_pipe_main.jpg
7. Product cards use hdpe001.jpg
8. pt-20 on main for fixed header

✅ TESTED LOCALLY:
- Build: 15 pages in 1.27s
- Docker build successful
- Port 80 working
- Images load
- CSS works

Ready for Easypanel deployment.

node_modules/property-information/lib/xmlns.js

@@ -0,0 +1,9 @@
+import {create} from './util/create.js'
+import {caseInsensitiveTransform} from './util/case-insensitive-transform.js'
+
+export const xmlns = create({
+  attributes: {xmlnsxlink: 'xmlns:xlink'},
+  properties: {xmlnsXLink: null, xmlns: null},
+  space: 'xmlns',
+  transform: caseInsensitiveTransform
+})