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/css-tree/lib/syntax/node/NestingSelector.js

@@ -0,0 +1,22 @@
+import { Delim } from '../../tokenizer/index.js';
+
+const AMPERSAND = 0x0026;       // U+0026 AMPERSAND (&)
+
+export const name = 'NestingSelector';
+export const structure = {
+};
+
+export function parse() {
+    const start = this.tokenStart;
+
+    this.eatDelim(AMPERSAND);
+
+    return {
+        type: 'NestingSelector',
+        loc: this.getLocation(start, this.tokenStart)
+    };
+}
+
+export function generate() {
+    this.token(Delim, '&');
+}