diff --git a/packages/browser-tailwind/src/index.ts b/packages/browser-tailwind/src/index.ts
index 0a1cf86..6fb35f2 100644
--- a/packages/browser-tailwind/src/index.ts
+++ b/packages/browser-tailwind/src/index.ts
@@ -1,7 +1,8 @@
 import postcss from "postcss";
 import tailwindcss, { Config } from "tailwindcss";
 import {
-  VIRTUAL_HTML_FILENAME,
+  VIRTUAL_CONTENT_EXTNAME,
+  VIRTUAL_CONTENT_FILENAME,
   VIRTUAL_SOURCE_PATH,
 } from "./polyfill/constants";
 
@@ -12,14 +13,16 @@ self.process = {
 
 export async function compileTailwindCSS(
   cssInput: string,
-  htmlInput: string,
+  contentInput: string,
+  extname: string,
   config: Config | {} = {},
   plugins = [],
 ) {
+  self[VIRTUAL_CONTENT_EXTNAME] = extname;
   // Tailwind scans the config.content for files to parse classNames -> set a virtual file here
-  if ("content" in config) {
-    self[VIRTUAL_HTML_FILENAME] = htmlInput;
-    config.content = [VIRTUAL_HTML_FILENAME];
+  if (!("content" in config)) {
+    self[VIRTUAL_CONTENT_FILENAME] = contentInput;
+    (config as Config).content = [VIRTUAL_CONTENT_FILENAME];
   }
   return await postcss([
     tailwindcss(config as Config),
diff --git a/packages/browser-tailwind/src/polyfill/constants.ts b/packages/browser-tailwind/src/polyfill/constants.ts
index 53985bd..8dc652b 100644
--- a/packages/browser-tailwind/src/polyfill/constants.ts
+++ b/packages/browser-tailwind/src/polyfill/constants.ts
@@ -2,5 +2,6 @@
 /**
  * Dummy constant for Node like environment in Browser for lib depending on fs module, like PostCSS
  */
-export const VIRTUAL_SOURCE_PATH = "/sourcePath";
-export const VIRTUAL_HTML_FILENAME = "/htmlInput";
+export const VIRTUAL_SOURCE_PATH = "BROWSER_TAILWIND_VIRTUAL_SOURCE_PATH";
+export const VIRTUAL_CONTENT_FILENAME = "BROWSER_TAILWIND_VIRTUAL_CONTENT_FILENAME";
+export const VIRTUAL_CONTENT_EXTNAME = "BROWSER_TAILWIND_VIRTUAL_CONTENT_EXTNAME";
diff --git a/packages/browser-tailwind/src/polyfill/fs.ts b/packages/browser-tailwind/src/polyfill/fs.ts
index bbf2fde..77e7756 100644
--- a/packages/browser-tailwind/src/polyfill/fs.ts
+++ b/packages/browser-tailwind/src/polyfill/fs.ts
@@ -11,5 +11,10 @@ export default {
     }
     return { mtimeMs: ++i };
   },
-  readFileSync: (id) => self[id] || "",
+  readFileSync: (id) => self[id] ?? "",
+  promises: {
+    readFile(id) {
+      return self[id] ?? "";
+    },
+  },
 };
diff --git a/packages/browser-tailwind/src/polyfill/path.ts b/packages/browser-tailwind/src/polyfill/path.ts
index 93bc746..111fe41 100644
--- a/packages/browser-tailwind/src/polyfill/path.ts
+++ b/packages/browser-tailwind/src/polyfill/path.ts
@@ -1,9 +1,13 @@
 //@ts-nocheck
+import { VIRTUAL_CONTENT_EXTNAME } from "./constants";
+
 self.__dirname = "";
 export default {
   join: () => {
     return "";
   },
+  resolve: (id) => id,
+  extname: (id) => self[VIRTUAL_CONTENT_EXTNAME],
 };
 
 export const join = () => {