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/prismjs/components/prism-properties.js

@@ -0,0 +1,13 @@
+Prism.languages.properties = {
+	'comment': /^[ \t]*[#!].*$/m,
+	'value': {
+		pattern: /(^[ \t]*(?:\\(?:\r\n|[\s\S])|[^\\\s:=])+(?: *[=:] *(?! )| ))(?:\\(?:\r\n|[\s\S])|[^\\\r\n])+/m,
+		lookbehind: true,
+		alias: 'attr-value'
+	},
+	'key': {
+		pattern: /^[ \t]*(?:\\(?:\r\n|[\s\S])|[^\\\s:=])+(?= *[=:]| )/m,
+		alias: 'attr-name'
+	},
+	'punctuation': /[=:]/
+};