The below userChrome.css fixes fullscreen in Zen Browser.
Last active
May 3, 2026 09:30
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Zen browser true fullscreen
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| /* Written by Lampe2020. | |
| * Falls under the terms of the WTFPL: https://www.wtfpl.net/txt/copying/ | |
| */ | |
| :root[inFullscreen=true] tabpanels#tabbrowser-tabpanels, :root[inFullscreen=true] #zen-tabbox-wrapper { | |
| position: fixed !important; | |
| top: 0 !important; | |
| left: 0 !important; | |
| right: 0 !important; | |
| bottom: 0 !important; | |
| margin: 0 !important; | |
| } | |
| :root[inFullscreen=true] .browserSidebarContainer.deck-selected { | |
| border-radius: 0px !important; | |
| } | |
| :root[inFullscreen=true] toolbox#navigator-toolbox, :root[inFullscreen=true] div#zen-appcontent-navbar-wrapper { | |
| display: none !important; | |
| width: 0 !important; | |
| height: 0 !important; | |
| } |
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