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Pushing the limits of the Firefox Browser through the use of CSS.

#join #firefoxcss:mozilla.org

Post your Firefox UI customizations here!

What is userChrome.css?

Rules (enforced)

Posts must have flair!
Follow Lemmy.World rules
Posts cannot be memes/shitposts. They should be about Firefox customization with CSS.
Please be civil. Bear in mind that many users come here for help and would be turned off by insults and rudeness.
When posting large amount of code use a service dedicated to hosting text snippets, such as pastebin, hastebin, github gist or equivalent. Relatively short snippets can be wrapped in code-block for inline viewing.
Do NOT use url-shorteners or link to compressed downloads (such as zip or rar) when sharing code.

Guidelines (not enforced)

Consider adding the following info to help people try your tweaks:

Screenshots should have code in comments.
Include Firefox version
When asking for help you should share your custom style to help others understand what you are doing. This is increasingly important the more custom rules you have.
List any other addons that may be changing the UI
If a custom wallpaper is used, include a link to the original.
If someone’s comment solves you problem, reply to the comment to let them know, and change your post flair to solved.

Wiki

Find Helpful Knowledge and answers to common issues in /c/FirefoxCSS wiki.

Getting started guide

Firefox CSS

[help] SOLVED: unable to modify the background of pocket stories in the Firefox homepage.

[help] SOLVED: unable to modify the background of pocket stories in the Firefox homepage.

Firefox customization community on Fedia

Firefox customization community on Fedia

Possible to change the header images for this forum?

Possible to change the header images for this forum?

How to partially override my GTK theme? I want to add a highlight to the current tab, but keep everything else

How to partially override my GTK theme? I want to add a highlight to the current tab, but keep everything else

Auto-resizable address bar

Auto-resizable address bar

Updated look for private windows

Updated look for private windows

My current lemmy setup (This is a post not just a picture, this lemmy thing is wierd)

My current lemmy setup (This is a post not just a picture, this lemmy thing is wierd)

In the Depuration Toolbox zone, how can I change the color of the buttons when hovering over them?

In the Depuration Toolbox zone, how can I change the color of the buttons when hovering over them?

How can change the color of the buttons when hovering over them in the toolbox?

How can change the color of the buttons when hovering over them in the toolbox?

The resources I mostly used in my FF CSS journey

The resources I mostly used in my FF CSS journey

Dark customizeable userstyle for Lemmy.world

Dark customizeable userstyle for Lemmy.world

[Fx 113] PSA - Changes to default element display-model

[Fx 113] PSA - Changes to default element display-model

Whilst thinking about Reddit...

Whilst thinking about Reddit...

[help] How do I prevent userContent to be apply in private browsing mode?

[help] How do I prevent userContent to be apply in private browsing mode?

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