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-to-hast/lib/handlers/html.js

@@ -0,0 +1,28 @@
+/**
+ * @import {Element} from 'hast'
+ * @import {Html} from 'mdast'
+ * @import {State} from '../state.js'
+ * @import {Raw} from '../../index.js'
+ */
+
+/**
+ * Turn an mdast `html` node into hast (`raw` node in dangerous mode, otherwise
+ * nothing).
+ *
+ * @param {State} state
+ *   Info passed around.
+ * @param {Html} node
+ *   mdast node.
+ * @returns {Element | Raw | undefined}
+ *   hast node.
+ */
+export function html(state, node) {
+  if (state.options.allowDangerousHtml) {
+    /** @type {Raw} */
+    const result = {type: 'raw', value: node.value}
+    state.patch(node, result)
+    return state.applyData(node, result)
+  }
+
+  return undefined
+}