Remove even more old Firefox < 112 compatibility rules

chrome/hide_tabs_scrollbuttons.css

@@ -26,12 +26,10 @@ See the above repository for updates as well as full license text. */
   visibility: visible !important;
 }
 spacer[part="overflow-start-indicator"]{
-  -moz-box-ordinal-group: 0; /* Fx < 112 compatibility */
   order: -1;
   margin-inline-start: var(--uc-scrollbox-overflow-start-margin,-0.5px) !important;
 }
 spacer[part="overflow-end-indicator"]{
-  -moz-box-ordinal-group: 2; /* Fx < 112 compatibility */
   order: 2;
 }
 

chrome/hide_tabs_toolbar.css

@@ -39,9 +39,7 @@ Window controls will be all wrong without it
 }
 
 :root[tabsintitlebar] #toolbar-menubar[autohide="true"] #main-menubar{
-  -moz-box-flex: 1; /* Fx < 112 compatibility */
   flex-grow: 1;
-  -moz-box-align: stretch; /* Fx < 112 compatibility */
   align-items: stretch;
   background-color: var(--toolbar-bgcolor,--toolbar-non-lwt-bgcolor);
   background-clip: padding-box;

chrome/hide_tabs_with_one_tab.css

@@ -42,7 +42,6 @@ This will NOT work correctly if you have hidden tabs such as with tab groups ext
 }
 @media (-moz-platform: linux){
   #TabsToolbar .titlebar-buttonbox{
-    -moz-box-align: stretch !important; /* Fx < 112 compatibility */
     align-items: stretch !important;
   }
   #TabsToolbar > .titlebar-buttonbox-container > .titlebar-buttonbox > .titlebar-button{

chrome/hide_tabs_with_one_tab_w_window_controls.css

@@ -31,7 +31,6 @@ Window controls will be all wrong without it
 
 #TabsToolbar > .titlebar-spacer[type="post-tabs"]{
   width: calc(var(--uc-window-control-width,0px) + var(--uc-window-drag-space-post,0px)) !important;
-  -moz-box-ordinal-group: 2; /* Fx < 112 compatibility */
   order: 2;
 }
 #toolbar-menubar > spacer{ pointer-events: none }

chrome/iconized_main_menu.css

@@ -40,6 +40,5 @@ See the above repository for updates as well as full license text. */
 }
 
 #appMenu-find-button2 ~ *{
-  -moz-box-ordinal-group: 2; /* Fx < 112 compatibility */
   order: 2;
 }

chrome/newtab_button_always_on_hover.css

@@ -7,5 +7,4 @@ See the above repository for updates as well as full license text. */
 }
 #tabbrowser-tabs:hover #tabs-newtab-button{
   display: flex !important;
-  align-items: center; /* Fx < 112 compatibility */
 }

chrome/non_floating_sharp_tabs.css

@@ -42,7 +42,6 @@ See the above repository for updates as well as full license text. */
 /* tabs newtab button needs some special styling... */
 #tabs-newtab-button{
   padding-inline: 0 !important;
-  -moz-box-align: stretch !important; /* Fx < 112 compatibility */
   align-items: stretch !important;
 }
 /* We draw the icon as background-image to get correct scaling regardless of toolbar height */
@@ -120,7 +119,6 @@ See the above repository for updates as well as full license text. */
 
 /* moves context-line to the bottom */
 .tab-context-line{
-  -moz-box-ordinal-group: 2; /* Fx < 112 compatibility */
   order: 2;
   margin-inline: 10px !important;
 }

chrome/pinned_tabs_on_right.css

@@ -7,34 +7,26 @@ See the above repository for updates as well as full license text. */
 .scrollbutton-up[orient="horizontal"]~spacer{ display: none }
 
 .scrollbutton-up[orient="horizontal"]~scrollbox{
-  -moz-box-direction: inherit; /* Fx < 112 compatibility */
-  -moz-box-pack: end; /* Fx < 112 compatibility */
   justify-content: flex-end;
 }
 
 .scrollbutton-up[orient="horizontal"]~scrollbox::after{
-  display: -moz-box; /* Fx < 112 compatibility */
   content: "";
   display: flex;
   flex-grow: 1;
   flex-shrink: 1;
   order: 2;
-  -moz-box-flex: 1; /* Fx < 112 compatibility */
-  -moz-box-ordinal-group: 2; /* Fx < 112 compatibility */
 }
 
 #tabs-newtab-button{
-  -moz-box-ordinal-group: 2; /* Fx < 112 compatibility */
   order: 2;
 }
 .tabbrowser-tab[pinned]{
-  -moz-box-ordinal-group: 3; /* Fx < 112 compatibility */
   order: 3;
 }
 
 #tabbrowser-tabs[positionpinnedtabs]{ direction: rtl }
 #tabbrowser-tabs[positionpinnedtabs] > arrowscrollbox { 
-  -moz-box-direction: reverse; /* Fx < 112 compatibility */
   flex-direction: row-reverse;
 }
 .tab-content{ direction: ltr }