fix: Fix product page syntax errors

1. Remove duplicate/broken code in product tables section
2. Fix PostCSS config for Tailwind 4
3. Add @tailwindcss/postcss dependency
4. Remove --production flag from Dockerfile (sharp required)

All fixes enable successful Docker build with favicon working.

node_modules/css-tree/lib/syntax/node/MediaQueryList.js

@@ -0,0 +1,34 @@
+import { Comma } from '../../tokenizer/index.js';
+
+export const name = 'MediaQueryList';
+export const structure = {
+    children: [[
+        'MediaQuery'
+    ]]
+};
+
+export function parse() {
+    const children = this.createList();
+
+    this.skipSC();
+
+    while (!this.eof) {
+        children.push(this.MediaQuery());
+
+        if (this.tokenType !== Comma) {
+            break;
+        }
+
+        this.next();
+    }
+
+    return {
+        type: 'MediaQueryList',
+        loc: this.getLocationFromList(children),
+        children
+    };
+}
+
+export function generate(node) {
+    this.children(node, () => this.token(Comma, ','));
+}