CSS selectors

Hi
Is there a list of css selectors for this plugin?
I specifically want to target the pop-up window and the languages links.
I’ve tried

.goog-te-banner-frame {
background-color:#575756!important;
}

and a few others in the custom css field but so far nothing seems to affect it?

Can you Help?

Thanks

https://ww.wp.xz.cn/plugins/google-website-translator/