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"New tabs appearance - The lack of clear lines separating tabs is driving me insane!" Again

  • 2 replies
  • 1 has this problem
  • 14 views
  • Last reply by cor-el

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There was already such a question, but it is in the archive and the answers previously given to it by technical support are no longer relevant (the browser.proton.enabled parameter no longer exists). How to return separators as lines in favorites? It's terribly annoying when it's just extended spaces. Not everyone has a perfectly developed eye gauge.

There was already such a question, but it is in the archive and the answers previously given to it by technical support are no longer relevant (the browser.proton.enabled parameter no longer exists). How to return separators as lines in favorites? It's terribly annoying when it's just extended spaces. Not everyone has a perfectly developed eye gauge.

All Replies (2)

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You can do that with a file userChrome.css which you have to create yourself. Are you willing to do that? Remove the blank space in the link. https://www.userchrome. org/how-create-userchrome-css.html

Helpful?

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Add CSS code to the userChrome.css file.


 *|*:root {
  --panel-font-size: 1em !important;
  --tab-min-height: 30px !important;
  --tab-border-radius: 4px !important;  /*4px*/
  --tab-block-margin: 0px !important; /*4px*/
 }

 .tabbrowser-tab {
   padding-inline: 0px !important;
 

 .tab-background:is([multiselected="true"],[selected="true"]) {
   border-top-color: var(--tabs-border-color) !important;
   border-top-style: solid !important;
   border-bottom-color: transparent !important;
 }

 .tab-background:not([selected=true],[multiselected=true]) {
   border: 1px solid rgba(0,0,0,.20) !important;
   border-top-color: transparent !important;
   border-bottom-color: transparent !important;
   background-color: color-mix(in srgb, currentColor 5%, transparent) !important;
 }

 .tab-background {
  border-radius: var(--tab-border-radius) !important;
  margin-block: var(--tab-block-margin) !important;
 }

It is not that difficult to create userChrome.css if you have never used it.

The first step is to open the "Help -> Troubleshooting Information" page and find the button to access the profile folder with the random name (xxxxxxxx.default-release).

You can find the button to go to the profile folder under the "Application Basics" section as "Profile Folder -> Open Folder". If you click this button then you open the profile folder in the Windows File Explorer. You need to create a folder with the name chrome in the profile folder with the random name (name is all lowercase). In the chrome folder you need to create a plain text file with the name userChrome.css (name is case sensitive). In this userChrome.css text file you paste the text posted. On Mac you can use the TextEdit utility to create the userChrome.css file as a plain text file.

In Windows saving the file is usually the only time things get more complicated because Windows can silently add a .txt file extension and you end up with a file named userChrome.css.txt. To avoid this you need to make sure to select "All files" in the dialog to save the file in the text editor using "Save File as".

You need to close (Quit/Exit) and restart Firefox when you create or modify the userChrome.css file.

In Firefox 69 and later you need to set this pref to true on the about:config page to enable userChrome.css and userContent.css in the chrome folder.

More info about userContent.css and userChrome.css in case you are not familiar: *https://www.userchrome.org/what-is-userchrome-css.html

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