Hey there,

I believe that the operating system should not matter, have you already tried the Customize > then moving the zoom buttons?

These are the features I am referencing:

• How to Customize Toolbars
• Customize Firefox controls, buttons and toolbars

With CSD on and the title bar hidden (browser.tabs.drawInTitlebar = true) Firefox places the control buttons at the far right of the tab bar or the menu bar when enabled. I assume that you can use code in userChrome.css to move the buttons (#titlebar-buttonbox) to the far left and set a margin-left instead of a margin-right to reserve space on the toolbar. See also this CSS file for existing rules (search for: titlebar):

chrome://browser/content/browser.css

If this is about the control buttons on the title bar then I don't think that you can to much on Linux.

• https://www.userchrome.org/how-create-userchrome-css.html
• https://www.userchrome.org/what-is-userchrome-css.html

tried a few margin settings and could not figure out how to get what I wanted

I almost have the buttons moved to the left where I want them, but I still have some issues. First when FF is first open the button box looks like its overlapping another buttonbox, second in fullscreen tabs overlay the buttons. Any help would be great.

I used the following css to move the buttons:

1. titlebar-buttonbox {

 display: flex;
 flex-direction: row-reverse;

}

/* .tabbrowser-tab {

 visibility: hidden;

} */

.titlebar-placeholder[type="pre-tabs"] {

 width: 120px !important;

}

/* #titlebar-secondary-buttonbox:-moz-locale-dir(rtl), */

1. titlebar-buttonbox-container {

 -moz-box-ordinal-group: 0;

}

images attached.

Thanks in advance for any help

Found some simpler code that fixed my issues and moved the buttons to the left where I want them.

code:

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

#titlebar-max {
  -moz-box-ordinal-group: 0;
}

#titlebar-content {
  direction: rtl;
}

#TabsToolbar {
  direction: rtl;
}

#tabbrowser-tabs {
  direction: ltr;
}