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/astro/components/ResponsiveImage.astro

@@ -0,0 +1,13 @@
+---
+import type { LocalImageProps, RemoteImageProps } from 'astro:assets';
+import Image from './Image.astro';
+
+type Props = LocalImageProps | RemoteImageProps;
+
+const { class: className, ...props } = Astro.props;
+
+import './image.css';
+---
+
+{/* Applying class outside of the spread prevents it from applying unnecessary astro-* classes */}
+<Image {...props} class={className} />