Customizations are always unsupported, as CSS may change at any time. My guess, and it's only a guess, is that the version you last used with this CSS was probably release 91 or older, as CSS had considerable change with 102. There is the possibility that someone will offer the CSS you want, but that I cannot predict.

/* puts message page in the middle */

1. threadPaneBox {-moz-box-direction: reverse !important;}

is the old css in Chrome/userChrome.css

Can anyone help me with the updated version? Thinking of reverting all the way back to 38.5.0 because I CANT STAND this layout.

I wish the layout I want was available as standard.

Why do you want to always be turning your head right just to read a msg?

I

/* puts message page in the middle */

1. threadPaneBox {-moz-box-direction: reverse !important;}

I wish the layout I want was available as standard. Why do you want to always be turning your head right just to read a msg?

I don't turn my head as the message display is at the bottom of the page. under the folder and message lists. It is where it has been since I used V2 and was as close to the outlook express layout I could manage when I installed Thunderbird.

However if you wish to make suggestions of offer feedback, please use the forum provided for the purpose which is monitored by the development community. I last encountered a developer in this forum about a decade ago. The more paid staff Mzla has the less they drop into support forums.

There is a link on the Thunderbird help menu for feedback and ideas that links here https://connect.mozilla.org/

Correct answer _________________________________ Thanks to Perplexity, but not ChatGPT _________________________________ The code that goes in [your profile folder]/Chrome/userChrome.css IS: __________________________________ /* Move the message pane to the middle in vertical layout (Thunderbird 128+) */ body.layout-vertical {

 grid-template:
   "folders folderPaneSplitter message messagePaneSplitter threads" auto /
   minmax(auto, var(--folderPaneSplitter-width))
   min-content
   minmax(auto, var(--messagePaneSplitter-width))
   min-content
   minmax(auto, 1fr) !important;

}

Can anyone help tweak this code? I need the splitter (messagePaneSplitter?) to go the other way

When I try to move the list of messages further to the right by grabbing the splitter and moving it to the right, it goes left, taking up more room (see pic). This is counter-intuitive and not like the old behaviour for this config-hack in previous Thunderbird versions.

________________________________________________________ For your convenience, here is the almost-successful code:

/* Move the message pane to the middle in vertical layout (Thunderbird 128+) */ body.layout-vertical {

grid-template:
  "folders folderPaneSplitter message messagePaneSplitter threads" auto /
  minmax(auto, var(--folderPaneSplitter-width))
  min-content
  minmax(auto, var(--messagePaneSplitter-width))
  min-content
  minmax(auto, 1fr) !important;

}