<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <!-- manifest.json provides metadata used when your web app is added to the homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/ <link rel="manifest" href="%PUBLIC_URL%/manifest.json"> --> <title>Extension App</title> </head> <body> <noscript> You need to enable JavaScript to run this app. </noscript> <div id="root"></div> </body> </html>