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pseudo-fullscreen-firefox

★ 70 Open GitHub ↗

Hides and improves interface Firefox and YouTube, giving maximum space for content and aiding concentration.

// repository documentation

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![alt text](https://raw.githubusercontent.com/ongots/pseudo-fullscreen-firefox/main/demo.gif)

### Firefox
1. If you have compact icons enabled, switch to normal
2. In about:config (enter into the address bar) turn it on: `toolkit.legacyUserProfileCustomizations.stylesheets` `true`  
3. Create a "chrome" folder in `Menu` > `Help` > `Troubleshooting Information` > `Profile Folder`
4. Copy there userChrome.css
5. Restart Firefox

Drag Bookmarks Toolbar Items to the left of the address bar.

<details><summary><b1> To update without rebooting and live-editing userChrome.css </b1></summary>

>If you're writing the styles yourself, you can set up [browser toolbox](https://firefox-source-docs.mozilla.org/devtools-user/browser_toolbox/index.html) and edit the files directly in it without having to restart Firefox for changes to apply. (You still need to restart Firefox when creating userChrome.css). On top of being able >to live-edit userChrome.css, the browser toolbox is essential in figuring out how to add custom styling to various parts of Firefox.
>
>You can find userChrome.css in the browser toolbox like this:
>
>1. Open browser toolbox
>2. Activate the Style Editor tab of the toolbox
>3. Type userChrome.css in the 'Filter stylesheets' box on the left
>4. Your userChrome.css appears on the right. Once you are done editing it, you can either close the toolbox which won't save your edits, or save edits by clicking the 'Save' link on the left.

</details>

<details><summary><b1> Useful settings about:config </b1></summary>

>Thin scrollbars
>`widget.non-native-theme.scrollbar.style` `3`  
>Open a bookmark in a new tab
>`browser.tabs.loadBookmarksInTabs` `true`  
>Open tab after current
>`browser.tabs.insertAfterCurrent` `true`  
>Smoothness of scrolling
>`general.smoothScroll.mouseWheel.durationMaxMS` `380`  
>Disable add-on recommendations
>`extensions.htmlaboutaddons.recommendations.enabled` `false`  
>Restore pinned tabs on demand
>`browser.sessionstore.restore_pinned_tabs_on_demand` `true`  
>OS text scaling settings should only affect text scaling
>`browser.display.os-zoom-behavior` `2`  
>Trim https
>`browser.urlbar.trimHttps` `true`  
>Decode URLs on copy
>`browser.urlbar.decodeURLsOnCopy` `true`

</details>

### Sidebery
1. [Install Sidebery](https://github.com/mbnuqw/sidebery)
2. Enable [Sidebery] prefix in Sidebery settings.
Enabled Sidebery replaces native side tabs.
3. Copy code from Sidebery.css to Sidebery / Settings / Styles editor / Sidebar

### YouTube
1. [Install Stylus](https://addons.mozilla.org/firefox/addon/styl-us/)
2. Open [YouTube](https://youtube.com)
3. Stylus: `New Style` > `Import` > Copy code from YouTube.css > `Replace style` > `Save`

pseudo-fullscreen-firefox

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