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-excel-formula.js

@@ -0,0 +1,66 @@
+Prism.languages['excel-formula'] = {
+	'comment': {
+		pattern: /(\bN\(\s*)"(?:[^"]|"")*"(?=\s*\))/i,
+		lookbehind: true,
+		greedy: true
+	},
+	'string': {
+		pattern: /"(?:[^"]|"")*"(?!")/,
+		greedy: true
+	},
+	'reference': {
+		// https://www.ablebits.com/office-addins-blog/2015/12/08/excel-reference-another-sheet-workbook/
+
+		// Sales!B2
+		// 'Winter sales'!B2
+		// [Sales.xlsx]Jan!B2:B5
+		// D:\Reports\[Sales.xlsx]Jan!B2:B5
+		// '[Sales.xlsx]Jan sales'!B2:B5
+		// 'D:\Reports\[Sales.xlsx]Jan sales'!B2:B5
+
+		pattern: /(?:'[^']*'|(?:[^\s()[\]{}<>*?"';,$&]*\[[^^\s()[\]{}<>*?"']+\])?\w+)!/,
+		greedy: true,
+		alias: 'string',
+		inside: {
+			'operator': /!$/,
+			'punctuation': /'/,
+			'sheet': {
+				pattern: /[^[\]]+$/,
+				alias: 'function'
+			},
+			'file': {
+				pattern: /\[[^[\]]+\]$/,
+				inside: {
+					'punctuation': /[[\]]/
+				}
+			},
+			'path': /[\s\S]+/
+		}
+	},
+	'function-name': {
+		pattern: /\b[A-Z]\w*(?=\()/i,
+		alias: 'builtin'
+	},
+	'range': {
+		pattern: /\$?\b(?:[A-Z]+\$?\d+:\$?[A-Z]+\$?\d+|[A-Z]+:\$?[A-Z]+|\d+:\$?\d+)\b/i,
+		alias: 'selector',
+		inside: {
+			'operator': /:/,
+			'cell': /\$?[A-Z]+\$?\d+/i,
+			'column': /\$?[A-Z]+/i,
+			'row': /\$?\d+/
+		}
+	},
+	'cell': {
+		// Excel is case insensitive, so the string "foo1" could be either a variable or a cell.
+		// To combat this, we match cells case insensitive, if the contain at least one "$", and case sensitive otherwise.
+		pattern: /\b[A-Z]+\d+\b|\$[A-Za-z]+\$?\d+\b|\b[A-Za-z]+\$\d+\b/,
+		alias: 'selector'
+	},
+	'number': /(?:\b\d+(?:\.\d+)?|\B\.\d+)(?:e[+-]?\d+)?\b/i,
+	'boolean': /\b(?:FALSE|TRUE)\b/i,
+	'operator': /[-+*/^%=&,]|<[=>]?|>=?/,
+	'punctuation': /[[\]();{}|]/
+};
+
+Prism.languages['xlsx'] = Prism.languages['xls'] = Prism.languages['excel-formula'];