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/mdn-data/package.json

@@ -0,0 +1,38 @@
+{
+  "name": "mdn-data",
+  "version": "2.27.1",
+  "description": "Open Web data by the Mozilla Developer Network",
+  "main": "index.js",
+  "files": [
+    "api/index.js",
+    "api/*.json",
+    "css/index.js",
+    "css/*.json",
+    "l10n/index.js",
+    "l10n/*.json"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/mdn/data.git"
+  },
+  "keywords": [
+    "data",
+    "mdn",
+    "mozilla",
+    "css"
+  ],
+  "author": "Mozilla Developer Network",
+  "license": "CC0-1.0",
+  "bugs": {
+    "url": "https://github.com/mdn/data/issues"
+  },
+  "homepage": "https://developer.mozilla.org",
+  "devDependencies": {
+    "ajv": "^7.2.4",
+    "better-ajv-errors": "^2.0.2"
+  },
+  "scripts": {
+    "lint": "node test/lint",
+    "test": "npm run lint"
+  }
+}