add vendor specific css prefixes (#322)

Co-authored-by: hossainemruz <hossainemruz@users.noreply.github.com>

package.json

@@ -18,6 +18,7 @@
   "homepage": "https://github.com/hossainemruz/toha#readme",
   "devDependencies": {
     "autoprefixer": "^10.2.5",
+    "postcss": "^8.2.15",
     "postcss-cli": "^8.3.1"
   }
 }