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/fetch-blob/file.js

@@ -0,0 +1,49 @@
+import Blob from './index.js'
+
+const _File = class File extends Blob {
+  #lastModified = 0
+  #name = ''
+
+  /**
+   * @param {*[]} fileBits
+   * @param {string} fileName
+   * @param {{lastModified?: number, type?: string}} options
+   */// @ts-ignore
+  constructor (fileBits, fileName, options = {}) {
+    if (arguments.length < 2) {
+      throw new TypeError(`Failed to construct 'File': 2 arguments required, but only ${arguments.length} present.`)
+    }
+    super(fileBits, options)
+
+    if (options === null) options = {}
+
+    // Simulate WebIDL type casting for NaN value in lastModified option.
+    const lastModified = options.lastModified === undefined ? Date.now() : Number(options.lastModified)
+    if (!Number.isNaN(lastModified)) {
+      this.#lastModified = lastModified
+    }
+
+    this.#name = String(fileName)
+  }
+
+  get name () {
+    return this.#name
+  }
+
+  get lastModified () {
+    return this.#lastModified
+  }
+
+  get [Symbol.toStringTag] () {
+    return 'File'
+  }
+
+  static [Symbol.hasInstance] (object) {
+    return !!object && object instanceof Blob &&
+      /^(File)$/.test(object[Symbol.toStringTag])
+  }
+}
+
+/** @type {typeof globalThis.File} */// @ts-ignore
+export const File = _File
+export default File