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prevent firefox from showing the address bar in fullscreen mode

Firefox Settings
mishash1998 replied
mishash1998
mishash1998

Hello,

After recent Firefox update ( ver. 85.0 - 01.2021 / 64-bit, Windows )

code:

  1. fullscr-toggler {display:none!important;}

in file: "userChrome.css"

that was effectively preventing firefox from showing the address bar in fullscreen mode seems stopped working.

Does anyone know workaround solution?

Thanks!

Hello, After recent Firefox update ( ver. 85.0 - 01.2021 / 64-bit, Windows ) code: #fullscr-toggler {display:none!important;} in file: "userChrome.css" that was effectively preventing firefox from showing the address bar in fullscreen mode seems stopped working. Does anyone know workaround solution? Thanks!

All Replies (2)

cor-el
cor-el
  • Top 25 Contributor
  • Moderator

Chosen Solution

#fullscr-toggler has been moved to HTML namespace, so you need to update the code in userChrome.css

Add code to the userChrome.css file below the default @namespace line. 

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

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

In Firefox 69 and later you need to set this pref to true on the about:config page to enable userChrome.css and userContent.css in the chrome folder.

  • toolkit.legacyUserProfileCustomizations.stylesheets = true

See:

mishash1998
mishash1998 Question owner

Yep, that worked. Thank you! :)