diff --git a/chatgpt-infinity/eslint.config.mjs b/chatgpt-infinity/eslint.config.mjs
index fbfbaad90..3960ff8bc 100644
--- a/chatgpt-infinity/eslint.config.mjs
+++ b/chatgpt-infinity/eslint.config.mjs
@@ -1,5 +1,6 @@
 import js from '@eslint/js'
 import globals from 'globals'
+import css from '@eslint/css'
 import importPlugin from 'eslint-plugin-import'
 import json from '@eslint/json'
 import markdown from '@eslint/markdown'
@@ -41,6 +42,7 @@ export default [
         }
     },
     { files: ['**/chatgpt.js'], languageOptions: { globals: { chatgpt: 'off' }}},
+    { files: ['**/*.css'], language: 'css/css', ...css.configs.recommended },
     { files: ['**/*.json'], language: 'json/json', ...json.configs.recommended },
     {
         files: ['**/*.md'], language: 'markdown/commonmark', plugins: { markdown },
diff --git a/chatgpt-infinity/package-lock.json b/chatgpt-infinity/package-lock.json
index 6b1ae3e85..5a3ccfc9d 100644
--- a/chatgpt-infinity/package-lock.json
+++ b/chatgpt-infinity/package-lock.json
@@ -16,6 +16,7 @@
       ],
       "license": "MIT",
       "devDependencies": {
+        "@eslint/css": "^0.2.0",
         "@eslint/json": "^0.9.0",
         "@eslint/markdown": "^6.2.1",
         "@stylistic/eslint-plugin-js": "^2.12.1",
@@ -83,6 +84,20 @@
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
     },
+    "node_modules/@eslint/css": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/@eslint/css/-/css-0.2.0.tgz",
+      "integrity": "sha512-m6BhqDKBatcPyY2DFNQ1gxf7VMiQysejylBcwHHZ63BMnthNqSAHJsmaPemtFA95DHlfVvu07FK7mu/p0QHheQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@eslint/plugin-kit": "^0.2.3",
+        "css-tree": "^3.0.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
     "node_modules/@eslint/eslintrc": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-3.2.0.tgz",
@@ -678,6 +693,20 @@
         "node": ">= 8"
       }
     },
+    "node_modules/css-tree": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-3.1.0.tgz",
+      "integrity": "sha512-0eW44TGN5SQXU1mWSkKwFstI/22X2bG1nYzZTYMAWjylYURhse752YgbE4Cx46AC+bAvI+/dYTPRk1LqSUnu6w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "mdn-data": "2.12.2",
+        "source-map-js": "^1.0.1"
+      },
+      "engines": {
+        "node": "^10 || ^12.20.0 || ^14.13.0 || >=15.0.0"
+      }
+    },
     "node_modules/data-view-buffer": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/data-view-buffer/-/data-view-buffer-1.0.1.tgz",
@@ -2440,6 +2469,13 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/mdn-data": {
+      "version": "2.12.2",
+      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.12.2.tgz",
+      "integrity": "sha512-IEn+pegP1aManZuckezWCO+XZQDplx1366JoVhTpMpBB1sPey/SbveZQUosKiKiGYjg1wH4pMlNgXbCiYgihQA==",
+      "dev": true,
+      "license": "CC0-1.0"
+    },
     "node_modules/micromark": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/micromark/-/micromark-4.0.0.tgz",
@@ -3574,6 +3610,16 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/source-map-js": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
+      "integrity": "sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/ssri": {
       "version": "12.0.0",
       "resolved": "https://registry.npmjs.org/ssri/-/ssri-12.0.0.tgz",
diff --git a/chatgpt-infinity/package.json b/chatgpt-infinity/package.json
index a57a79820..474a9b50c 100644
--- a/chatgpt-infinity/package.json
+++ b/chatgpt-infinity/package.json
@@ -34,6 +34,7 @@
     "bump:firefox": "bash utils/bump/extension-manifests.sh --ff"
   },
   "devDependencies": {
+    "@eslint/css": "^0.2.0",
     "@eslint/json": "^0.9.0",
     "@eslint/markdown": "^6.2.1",
     "@stylistic/eslint-plugin-js": "^2.12.1",