Firefox Fullscreen Disable Mouse Top Row Restore

userChrome.css

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

/*
https://superuser.com/questions/1750521/firefox-106-0-3-ignoring-fullscr-toggler-displaynoneimportant-in-user
*/

*|div#fullscr-toggler {
    display:none !important;
}

/*
https://superuser.com/questions/1558881/how-to-disable-firefox-address-bar-animation-on-fullscreen
*/

#navigator-toolbox[fullscreenShouldAnimate] {
    transition: none !important;
}