the header, tabs and search bar take up 30% of my display. How do I shrink them?

[Peter1]

the header, tabs and search bar take up 30% of my display. How do I shrink them?

[Anonymous]

1. remove window border via  Customize Toolbar... >  uncheck the Title Bar box
2. enable compact design >  in about:config set browser.compactmode.show to true then via/in Customize Toolbar... panel in the Density dropdown select  compact (not supported)
3. scale down the UI text via  about:config and setting  ui.textScaleFactor to a higher  value like  120  (100 default)

Hope one of these helps.

[Peter1]

First of all, thank you for taking the time to respond.  I have searched settings and customize toolbar for these things and they do not show up.  My customize toolbar page just has an area on the right to drag and drop things too. 

Can you please tell me where to locate these items other than where I have searched in settings and customize tool bar.  It is highly likely I am retarded and doing it wrong lol.

[Anonymous]

[X] Title Bar,  [Toolbars], [Density] are at the bottom left of the "Customize Toolbar" panel. as seen on this image: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/gallery/images/2021-08-24-14-27-33-7ceddb...

ref. https://support.mozilla.org/en-US/kb/customize-firefox-controls-buttons-and-toolbars

to access `about:config`, type `about:config` into the url bar and hit enter. ref. https://support.mozilla.org/en-US/kb/about-config-editor-firefox

[Peter1]

Thank you.  At some point search engines and websites expanded their use of our computer screens.