diff --git a/README.md b/README.md
new file mode 100644
index 0000000..70bb73a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,37 @@
+# swd-eslint-config
+
+This is a custom eslint config for my projects. It uses the latest flat config version of eslint.
+
+- Usage:
+
+  - Install: `pnpm add -D swd-eslint-config`
+  - In your `eslint.config.mjs`:
+
+    ```ts
+    import swdEslintPlugin from "swd-eslint-config";
+    import tseslint from "typescript-eslint";
+
+    export default tseslint.config(
+      ...swdEslintPlugin.configs.base,
+      // if using React:
+      ...swdEslintPlugin.configs.react
+    );
+
+    // or the flat config with classic syntax:
+    export default tseslint.config({
+      extends: [
+        ...swdEslintPlugin.configs.base,
+        // if using React:
+        ...swdEslintPlugin.configs.react,
+      ],
+    });
+    ```
+
+- Plugins included:
+  - [eslint-plugin-react](https://github.com/jsx-eslint/eslint-plugin-react)
+  - [eslint-plugin-jsx-a11y](https://github.com/jsx-eslint/eslint-plugin-jsx-a11y)
+  - [eslint-plugin-tailwindcss](https://github.com/tailwindlabs/eslint-plugin-tailwindcss)
+  - [eslint-plugin-prettier](https://github.com/prettier/eslint-plugin-prettier)
+  - [eslint-plugin-simple-import-sort](https://github.com/lydell/eslint-plugin-simple-import-sort)
+  - [eslint-plugin-react-hooks](https://github.com/facebook/react/tree/main/packages/eslint-plugin-react-hooks)
+  - [typescript-eslint](https://github.com/typescript-eslint/typescript-eslint/tree/main/packages/eslint-plugin)
diff --git a/src/flat-react.ts b/src/flat-react.ts
index 6b69118..6e3147b 100644
--- a/src/flat-react.ts
+++ b/src/flat-react.ts
@@ -35,6 +35,13 @@ export const react = tseslint.config(
     rules: {
       "react/prop-types": "off",
       "react/display-name": "warn",
+      "tailwindcss/no-custom-classname": [
+        "warn",
+        {
+          callees: ["classnames", "clsx", "cva", "twMerge", "cn"],
+          ignoredKeys: ["color", "variant", "size", "defaultVariants"],
+        },
+      ],
     },
   },
   {