Hello
https://support.mozilla.org/en-US/kb/about-config-editor-firefox
Searching for preferences browser.translations.enable and try false
If it's the pop-up that's bothering you
then re-enable translation
Then try
browser.translations.automaticallyPopup false
Another demonstration and (for example) https://forum.mozillaitalia.org
browser.translations.automaticallyPopup
https://drive.google.com/file/d/1DzmMGEkgMo73YxPB48Dq83MECevrM-QA/view?usp=sharing **
You can also Download the animation, if you wish
Support
Firefox Fullpage Translation https://support.mozilla.org/en-US/kb/website-translation
Note : To bookmark a page, just click on the star in the address bar https://support.mozilla.org/en-US/kb/bookmarks-firefox
** In the demo, You can't see the star in the address bar, that's normal
The ergonomics are normal, including userChrome.css
For this reason, I'm using a userChrome.css code #star-button{display:none!important;}
Now, i use this code
#star-button-box {display:none!important;}
