<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <meta name="google-signin-client_id" content="[YOUR_OAUTH_2_CLIENT_ID_FOR_WEB]" />
  <title>Google Sign-in Example</title>
</head>
<body>
  <script src="main.dart.js" type="application/javascript"></script>
</body>
</html>