Maximized browsers on wide screen monitors aren't very usable though, you end up with loads of pointless whitespace. The browser works best with a roughly square viewport on 1080p, or tending towards portrait on 1440p.
2. cd chrome or create the directory if it isn't there
3. Inside chrome, open userChrome.css or create it if it isn't there
4. Paste the following:
@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
/* to hide the native tabs */
#TabsToolbar {
visibility: collapse;
}
/* to hide the sidebar header */
#sidebar-header {
visibility: collapse;
}
5. Restart Firefox---
1. http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigatin...
Also, if you hide the sidebar header I think you run the risk of accidentally opening the bookmarks sidebar and being unable to get back to your tabs.
https://dosowisko.net/Screenshot_20171030_203716.png https://dosowisko.net/Screenshot_20171030_203804.png