Fix CSS not importable in CSS file

package.json

@@ -2,7 +2,7 @@
   "name": "driver.js",
   "license": "MIT",
   "private": false,
-  "version": "1.3.3",
+  "version": "1.3.4",
   "main": "./dist/driver.js.cjs",
   "module": "./dist/driver.js.mjs",
   "types": "./dist/driver.js.d.ts",
@@ -19,6 +19,7 @@
       "import": "./dist/driver.js.mjs"
     },
     "./dist/driver.css": {
+      "default": "./dist/driver.css",
       "import": "./dist/driver.css",
       "require": "./dist/driver.css"
     }