You can do it yourself using the standard containers extension. If you really need a special extension just to create Google containers, https://addons.mozilla.

You can do it yourself using the standard containers extension. If you really need a special extension just to create Google containers, https://addons.mozilla.org/en-US/firefox/addon/google-container/ https://addons.mozilla.org/en-US/firefox/addon/google-contai...