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/prismjs/components/prism-bnf.js

@@ -0,0 +1,21 @@
+Prism.languages.bnf = {
+	'string': {
+		pattern: /"[^\r\n"]*"|'[^\r\n']*'/
+	},
+	'definition': {
+		pattern: /<[^<>\r\n\t]+>(?=\s*::=)/,
+		alias: ['rule', 'keyword'],
+		inside: {
+			'punctuation': /^<|>$/
+		}
+	},
+	'rule': {
+		pattern: /<[^<>\r\n\t]+>/,
+		inside: {
+			'punctuation': /^<|>$/
+		}
+	},
+	'operator': /::=|[|()[\]{}*+?]|\.{3}/
+};
+
+Prism.languages.rbnf = Prism.languages.bnf;