In http://localhost i have put in the index.html file this:
<iframe src="https://google.com" style="position:fixed; top:0; left:0; bottom:0; right:0; width:100%; height:100%; border:none; margin:0; padding:0; overflow:hidden; z-index:999999;">
Your browser doesn't support iframes
</iframe>
But it just shows the sad face.
Any help would be good
Thanks
Google.com prevents framing via the X-Frame-Options
header.
Most large sites will do the same.
It's also possible to use a Content Security Policy to prevent framing.