Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
This thread was archived. Please ask a new question if you need help.
Solved Archived

Disabling the mouseover to reveal the address/toolbar while in fullscreen - old method doesn't work

Firefox Tips and tricks
cor-el replied
udibner
udibner

For a long time I used a known method to disable the mouseover to reveal the address/toolbar while in fullscreen. It is described here link text and works via adding this line

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

in userChrome.css and enabling userChrome.css at about:config page. However it stopped working for me. I am currently with Firefox 85.0.

For a long time I used a known method to disable the mouseover to reveal the address/toolbar while in fullscreen. It is described here [https://support.mozilla.org/en-US/questions/1271399 link text] and works via adding this line #fullscr-toggler { display:none !important; } in userChrome.css and enabling userChrome.css at about:config page. However it stopped working for me. I am currently with Firefox 85.0.

All Replies (1)

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

Chosen Solution

Hi

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

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