You could try the change outlined in the link below. It will reduce some of the spacing. Otherwise, you will have to use userChrome.css.

https://support.mozilla.org/en-US/kb/compact-mode-workaround-firefox

Will have to use the userChrome.css but I cannot find any instruction on how to use it. I would be most appreciative of a link.

Thanks

Here are two relevant links. I have added blank spaces to avoid delays in publishing this post and you will have to remove them.

https://www.userchrome. org/how-create-userchrome-css.html http://www.userchrome. org/firefox-89-styling-proton-ui.html

This is another.

https://github.com/MrOtherGuy/firefox-csshacks/blob/master/chrome/compact_proton.css

Sorry for my inability to resolve this problem. I got to the page and do not have a clue where to go. I see some bookmark items and don't know if this is what I download into css file. Heck I don't even know if this is the correct page.

Well, I got to the point where I added the following to userChrome.css

@import url(chrome/tab_close_button_always_on_hover.css); @import url(chrome/tab_loading_progress_throbber.css); @import url(chrome/button_effect_scale_onclick.css);

root{

 --toolbar-bgcolor: rgb(36,44,59) !important;
 --uc-menu-bkgnd: var(--toolbar-bgcolor);
 --arrowpanel-background: var(--toolbar-bgcolor) !important;
 --autocomplete-popup-background: var(--toolbar-bgcolor) !important;
 --uc-menu-disabled: rgb(90,90,90) !important;
 --lwt-toolbar-field-focus: rgb(36,44,59) !important;

}

Unfortunately for me that did not correct the wide spacing between the bookmarks, but at least I learned a few things about editing. Perhaps the designers of 107.0.1 will do something in the next update. Perhaps I am still missing something.

None of that code has anything to do with bookmark spacing.

https://www.userchrome.org/firefox-89-styling-proton-ui.html#menuspacing

I have tried everything and still cannot get the double spacing out of the menus. I am surprised that I haven't totally destroyed Firefox on my computer. I have always been able to use the about:config but this time a have failed. I have just run out of time. Hope we get a fix for it in the future. Really bugs me that I couldn't fix the problem this time. I did learn a few new things, so it wasn't a total waste of time. Thanks for all your efforts.