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/remark-stringify/lib/index.d.ts

@@ -0,0 +1,26 @@
+/**
+ * Add support for serializing to markdown.
+ *
+ * @param {Readonly<Options> | null | undefined} [options]
+ *   Configuration (optional).
+ * @returns {undefined}
+ *   Nothing.
+ */
+export default function remarkStringify(options?: Readonly<Options> | null | undefined): undefined;
+export default class remarkStringify {
+    /**
+     * Add support for serializing to markdown.
+     *
+     * @param {Readonly<Options> | null | undefined} [options]
+     *   Configuration (optional).
+     * @returns {undefined}
+     *   Nothing.
+     */
+    constructor(options?: Readonly<Options> | null | undefined);
+    compiler: (tree: import("mdast").Root, file: import("vfile").VFile) => string;
+}
+export type Root = import('mdast').Root;
+export type ToMarkdownOptions = import('mdast-util-to-markdown').Options;
+export type Compiler = import('unified').Compiler<Root, string>;
+export type Processor = import('unified').Processor<undefined, undefined, undefined, Root, string>;
+export type Options = Omit<ToMarkdownOptions, 'extensions'>;