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Aris-t2
CustomCSSforFx
CSS2017–2024
Aris-t2 / CustomCSSforFx

CustomCSSforFx

Custom CSS tweaks for Firefox

Web Development
Explore on GitHubRead Hacker News discussions
14Distinct people
20Mentions
0Explicit recommenders
2.1KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Custom CSS tweaks for Firefox

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:03:16 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year20 dated mentions

Observed mentions: 2017-11-13 16:40:41 UTC to 2024-04-17 02:32:20 UTC.

0123452017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments20172018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 5 mentions; 0 submissions, 5 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2024

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC404
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC202
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC101
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC404
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC202
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC101
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC505
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC101

What Hacker News says

20 sources
drtgh·Dec 10, 2023
Just in case you do not know, or you are interested, the Firefox's UI is mere CSS, one can customize it through "chrome/userChrome.css" in the profile folder of the user. I put for example my tabs under the bookmarks, just above the page content (As FF used to be at past), with the template from the CustomCSSforFx[1] project, and modified some colors and icons. Firefox have also the "Browser Toolbox"[2], homologous to the web development tools, that one can use for to explore the css of the UI, select elements, etc, and modify them for to see how would look the modifications before to put them within the userChrome.css The tabs I think that are under the id=TabsToolbar, so an #TabsToolbar{ display: none !important; } or similar should work, in addition to correct with other css params the space that it leaves. Note: What happens is they c
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hange things from time to time, and after an update one have to correct the css again, I warn. [1] https://github.com/Aris-t2/CustomCSSforFx [2] https://firefox-source-docs.mozilla.org/devtools-user/browse...
In Firefox Keeps Getting Faster
drtgh·Nov 27, 2023
When I open the firefox I see the following [0]interface rows : 1. previows/next | history | Menubar-bookmarks button | --URL BAR-- | reload | home | some addons | Decentral eyes | CookieAutoDelete | uMatrix | uBlockOrigin | Multi-Acount containers | Addons icon | Menu bar icon |. 2. Toolbar-bookmarks row | Button for unfolding the bookmarks that don't fit in such row. 3. Pinned tabs (they are only icons) | < | Tab_1, Tab_2, Tab_3, ... | > | + | unfold vertical list of the opened tabs |. 4. The page for the selected Tab. This allows us to use two bookmarks visual groups, the ones that are unfolded through the Menubar-bookmarks, and the ones always visible when Toolbar-bookmarks are enabled (what in reality is a subfolder from menubar's bookmarks) and are shown as 2nd row in my interface. Also the easy access to Containers and the CookieAu
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toDelete, uMatrix, uBlockOrigin current page options are essential. In the Toolbar-bookmarks, for being able to visually have more folders as "quick access" row line, I use acronyms as folder names (just for the first ones until fill that space). This between separators, and also mere url icons bookmarks (by removing the bookmark title name its just showed the page icon). When one push one those folders are unfold all the related sub-folders and sub-bookmarks. Also, equally important, the folders and bookmarks that don't fit in such row are easily accessible by pushing an icon at the right corner, what unfolds a vertical list with the rest the bookmarks. This is important because in such toolbar one usually have several hundreds of independent bookmarks and folders by topics, with infinite sub-folders and their respective bookmarks, etc. This let us in Firefox with: Pinned tabs, the current session opened tabs, the usability of to have the Toolbar-bookmarks with folders as topics by clicking the folder or icon, and a second different visual group of bookmarks through Menubar-bookmarks. By other side, if one want to add to those folders/topics the page that is being visited it's just needed to drag and drop the url there. Also all those bookmarks' folders have their option for to open their content in tabs. I cannot think of browsing comfortably without such an interface and tools as a starting point. [0] Thankfully and fortunately, with Firefox it is possible to have a browser focused in usability by enabling its options, and also to do adjustments in the interface under our needs with custom stylesheets. By default in FF the tabs are shown over the url bar, but in my case I use as base [1]customcssforfx for to put the tabs under toolbar-bookmarks, and from there I add a couple of lines with custom padding, sizes and icons. [1] https://github.com/aris-t2/customcssforfx
In Choose the browser that best suits your privacy needs
drtgh·Apr 19, 2023
For Firefox desktop I have enabled the menu bar and the bookmark bar with the methods commented in the other messages. Also, I use a custom userChrome.css that uses as basis https://github.com/aris-t2/customcssforfx From time to time comes a Firefox update that makes mandatory to update such userChrome.css and waste time trying to find what additionally changed and needs to be updated by my_userChrome.css also, but as reward for such pain I have the same view that was used to be with the browsers years ago. I mean, from top to down with small gray icons: menu bar, url bar with addons at the right, bookmarks bar where I put folders based by category (unfold and fold on press), and finally tabs and pinned tabs over the page content. With the minimalist tendency of current browsers, they sacrifice what makes a browser usable, an usability ki
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lling that also forces the user to continually waste time making hacks for to conserve it. But at least it can be done, so at my side I just pray that it at least stays that way.
In Ask HN: Anyone Use Firefox in 2023?
pr0zac·Mar 22, 2023
You can still mod Firefox's UI pretty easily, its all defined by CSS files and not too difficult to customize. I for instance actually did the opposite of what you wanted and completely got rid of the tab bar cause I use Sidebery for tab management: https://i.imgur.com/cHz1clI.png Theres a whole subreddit for it even: https://www.reddit.com/r/FirefoxCSS/ This repo (and that subreddit) has all the info on setting stuff up in Firefox: https://github.com/aris-t2/customcssforfx and even has a CSS example for doing multi-tab lines: https://github.com/Aris-t2/CustomCSSforFx/blob/master/curren...
In Mozilla.ai: Investing in Trustworthy AI
trog·Aug 15, 2021
Some other useful resources, including how to get tabs on bottom for those of us that like our world topsy-turvy: - https://github.com/black7375/Firefox-UI-Fix - a good base including different light/dark themes. See Tips for code to put tabs on bottom - https://github.com/aris-t2/customcssforfx - huge collection of different CSS that you can mix together for the perfectly customised UI Hoping some day someone builds a playground so it's easy to build/customise interfaces through a GUI as I find it a bit of a chore to get things tweaked exactly right! In the meantime it's worth noting you can use remote debugging[1] to live edit the interface. 1. https://www.reddit.com/r/FirefoxCSS/comments/73dvty/tutorial...
In Firefox 91 – Revert back to old tab style
plopz·Jan 7, 2020
Unfortunately userchrome.css breaks frequently with firefox updates and is a pain to maintain since it is outside of the extension ecosystem. There used to be a great addon called ClassicThemeRestorer that got killed during firefox's terrible web extension debacle. It lives on in https://github.com/Aris-t2/CustomCSSforFx but different parts break everytime the fickle designers at mozilla change their mind on what a tab should look like.
In Firefox 72.0

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