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/mdast-util-gfm-strikethrough/lib/index.d.ts

@@ -0,0 +1,23 @@
+/**
+ * Create an extension for `mdast-util-from-markdown` to enable GFM
+ * strikethrough in markdown.
+ *
+ * @returns {FromMarkdownExtension}
+ *   Extension for `mdast-util-from-markdown` to enable GFM strikethrough.
+ */
+export function gfmStrikethroughFromMarkdown(): FromMarkdownExtension
+/**
+ * Create an extension for `mdast-util-to-markdown` to enable GFM
+ * strikethrough in markdown.
+ *
+ * @returns {ToMarkdownExtension}
+ *   Extension for `mdast-util-to-markdown` to enable GFM strikethrough.
+ */
+export function gfmStrikethroughToMarkdown(): ToMarkdownExtension
+export type Delete = import('mdast').Delete
+export type CompileContext = import('mdast-util-from-markdown').CompileContext
+export type FromMarkdownExtension = import('mdast-util-from-markdown').Extension
+export type FromMarkdownHandle = import('mdast-util-from-markdown').Handle
+export type ConstructName = import('mdast-util-to-markdown').ConstructName
+export type ToMarkdownHandle = import('mdast-util-to-markdown').Handle
+export type ToMarkdownExtension = import('mdast-util-to-markdown').Options