diff --git a/browser/modules/PanelFrame.jsm b/browser/modules/PanelFrame.jsm
index 953e84c59a4..a0139eb0c11 100644
--- a/browser/modules/PanelFrame.jsm
+++ b/browser/modules/PanelFrame.jsm
@@ -183,9 +183,7 @@ let PanelFrame = {
       }
     });
 
-    // in overflow, the anchor is a normal toolbarbutton, in toolbar it is a badge button
-    let anchor = aWindow.document.getAnonymousElementByAttribute(anchorBtn, "class", "toolbarbutton-badge-container") ||
-                 aWindow.document.getAnonymousElementByAttribute(anchorBtn, "class", "toolbarbutton-icon");
+    let anchor = aWindow.document.getAnonymousElementByAttribute(anchorBtn, "class", "toolbarbutton-icon");
     // Bug 849216 - open the popup asynchronously so we avoid the auto-rollup
     // handling from preventing it being opened in some cases.
     Services.tm.mainThread.dispatch(function() {
diff --git a/browser/themes/linux/browser.css b/browser/themes/linux/browser.css
index 8f14c845a47..4e894f20bf8 100644
--- a/browser/themes/linux/browser.css
+++ b/browser/themes/linux/browser.css
@@ -584,7 +584,7 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
 .findbar-button > .toolbarbutton-text,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-badge-container,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-badge-stack,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-icon {
   -moz-margin-end: 0;
   padding: 2px 6px;
@@ -595,14 +595,14 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
 }
 
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutton-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutton-badge-container,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutton-badge-stack,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
   padding: 3px 7px;
 }
 
 /* Help SDK icons fit: */
 toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-container > .toolbarbutton-icon {
+toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
   width: 16px;
 }
 
@@ -620,7 +620,7 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1[open]:not([disabled=true]) > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):not([open]):hover > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):not([open]):hover > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):hover > .toolbarbutton-badge-container,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):hover > .toolbarbutton-badge-stack,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):hover > .toolbarbutton-icon {
   background: var(--toolbarbutton-hover-background);
   border-width: 1px;
@@ -638,7 +638,7 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 .findbar-button:not([disabled=true]):-moz-any([checked="true"],:hover:active) > .toolbarbutton-text,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button:not([disabled=true]):-moz-any(:hover:active, [open="true"]) > .toolbarbutton-icon,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1[open="true"] > .toolbarbutton-menubutton-dropmarker:not([disabled=true]) > .dropmarker-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-badge-container,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-badge-stack,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-icon {
   background: var(--toolbarbutton-active-background);
   box-shadow: var(--toolbarbutton-active-boxshadow);
diff --git a/browser/themes/osx/browser.css b/browser/themes/osx/browser.css
index 4666be17d13..52f8eba8c81 100644
--- a/browser/themes/osx/browser.css
+++ b/browser/themes/osx/browser.css
@@ -1067,7 +1067,7 @@ toolbar .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker > .dropmarker-ic
   }
 
   :-moz-any(@primaryToolbarButtons@) > .toolbarbutton-icon,
-  :-moz-any(@primaryToolbarButtons@) > .toolbarbutton-badge-container > .toolbarbutton-icon,
+  :-moz-any(@primaryToolbarButtons@) > .toolbarbutton-badge-stack > .toolbarbutton-icon,
   :-moz-any(@primaryToolbarButtons@) > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
     width: 18px;
   }
@@ -1090,25 +1090,25 @@ toolbar .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutto
 
 /* Help SDK icons fit: */
 toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-container > .toolbarbutton-icon {
+toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
   width: 16px;
 }
 
 #main-window:not([customizing]) .toolbarbutton-1[disabled="true"] > .toolbarbutton-icon,
-#main-window:not([customizing]) .toolbarbutton-1[disabled="true"] > .toolbarbutton-badge-container > .toolbarbutton-icon,
+#main-window:not([customizing]) .toolbarbutton-1[disabled="true"] > .toolbarbutton-badge-stack > .toolbarbutton-icon,
 #main-window:not([customizing]) .toolbarbutton-1 > .toolbarbutton-menubutton-button[disabled="true"] > .toolbarbutton-icon {
   opacity: .4;
 }
 
 @media (-moz-mac-lion-theme) {
   #main-window:not([customizing]) .toolbarbutton-1[disabled="true"] > .toolbarbutton-icon,
-  #main-window:not([customizing]) .toolbarbutton-1[disabled="true"] > .toolbarbutton-badge-container > .toolbarbutton-icon,
+  #main-window:not([customizing]) .toolbarbutton-1[disabled="true"] > .toolbarbutton-badge-stack > .toolbarbutton-icon,
   #main-window:not([customizing]) .toolbarbutton-1 > .toolbarbutton-menubutton-button[disabled="true"] > .toolbarbutton-icon,
   #main-window:not([customizing]) .toolbarbutton-1[disabled="true"] > .toolbarbutton-menu-dropmarker,
   #main-window:not([customizing]) .toolbarbutton-1[disabled="true"] > .toolbarbutton-menubutton-dropmarker,
   .toolbarbutton-1:not(:hover):-moz-window-inactive > .toolbarbutton-icon,
   .toolbarbutton-1:not(:hover):-moz-window-inactive > .toolbarbutton-text,
-  .toolbarbutton-1:not(:hover):-moz-window-inactive > .toolbarbutton-badge-container > .toolbarbutton-icon,
+  .toolbarbutton-1:not(:hover):-moz-window-inactive > .toolbarbutton-badge-stack > .toolbarbutton-icon,
   .toolbarbutton-1:not(:hover):-moz-window-inactive > .toolbarbutton-menu-dropmarker,
   .toolbarbutton-1:not(:hover):-moz-window-inactive > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
   .toolbarbutton-1:not(:hover):-moz-window-inactive > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
@@ -1116,7 +1116,7 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
   }
 
   #main-window:not([customizing]) .toolbarbutton-1:-moz-window-inactive[disabled="true"] > .toolbarbutton-icon,
-  #main-window:not([customizing]) .toolbarbutton-1:-moz-window-inactive[disabled="true"] > .toolbarbutton-badge-container > .toolbarbutton-icon,
+  #main-window:not([customizing]) .toolbarbutton-1:-moz-window-inactive[disabled="true"] > .toolbarbutton-badge-stack > .toolbarbutton-icon,
   #main-window:not([customizing]) .toolbarbutton-1:-moz-window-inactive > .toolbarbutton-menubutton-button[disabled="true"] > .toolbarbutton-icon {
     opacity: .25;
   }
diff --git a/browser/themes/shared/customizableui/customizeMode.inc.css b/browser/themes/shared/customizableui/customizeMode.inc.css
index 4477edfd362..955c88701e7 100644
--- a/browser/themes/shared/customizableui/customizeMode.inc.css
+++ b/browser/themes/shared/customizableui/customizeMode.inc.css
@@ -233,14 +233,14 @@ toolbarpaletteitem[notransition][place="panel"] {
 }
 
 toolbarpaletteitem > toolbarbutton > .toolbarbutton-icon,
-toolbarpaletteitem > toolbarbutton > .toolbarbutton-badge-container > .toolbarbutton-icon,
+toolbarpaletteitem > toolbarbutton > .toolbarbutton-badge-stack > .toolbarbutton-icon,
 toolbarpaletteitem > toolbaritem.panel-wide-item,
 toolbarpaletteitem > toolbarbutton[type="menu-button"] {
   transition: transform .3s cubic-bezier(.6, 2, .75, 1.5) !important;
 }
 
 toolbarpaletteitem[mousedown] > toolbarbutton > .toolbarbutton-icon,
-toolbarpaletteitem[mousedown] > toolbarbutton > .toolbarbutton-badge-container > .toolbarbutton-icon {
+toolbarpaletteitem[mousedown] > toolbarbutton > .toolbarbutton-badge-stack > .toolbarbutton-icon {
   transform: scale(1.3);
 }
 
diff --git a/browser/themes/shared/customizableui/panelUIOverlay.inc.css b/browser/themes/shared/customizableui/panelUIOverlay.inc.css
index abc77429b3d..e621d0f6fd7 100644
--- a/browser/themes/shared/customizableui/panelUIOverlay.inc.css
+++ b/browser/themes/shared/customizableui/panelUIOverlay.inc.css
@@ -312,9 +312,9 @@ toolbarpaletteitem[place="panel"]:not([haswideitem=true]) > .toolbarbutton-1 {
 
 /* Help SDK buttons fit in. */
 toolbarpaletteitem[place="palette"] > toolbarbutton[constrain-size="true"] > .toolbarbutton-icon,
-toolbarpaletteitem[place="palette"] > toolbarbutton[constrain-size="true"] > .toolbarbutton-badge-container > .toolbarbutton-icon,
+toolbarpaletteitem[place="palette"] > toolbarbutton[constrain-size="true"] > .toolbarbutton-badge-stack > .toolbarbutton-icon,
 toolbarbutton[constrain-size="true"][cui-areatype="menu-panel"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="menu-panel"] > .toolbarbutton-badge-container > .toolbarbutton-icon {
+toolbarbutton[constrain-size="true"][cui-areatype="menu-panel"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
   height: 32px;
   width: 32px;
 }
@@ -432,10 +432,10 @@ toolbaritem[cui-areatype="menu-panel"][sdkstylewidget="true"]:not(.panel-wide-it
 
 .panelUI-grid .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
 .panelUI-grid .toolbarbutton-1 > .toolbarbutton-icon,
-.panelUI-grid .toolbarbutton-1 > .toolbarbutton-badge-container,
+.panelUI-grid .toolbarbutton-1 > .toolbarbutton-badge-stack,
 .customization-palette .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
 .customization-palette .toolbarbutton-1 > .toolbarbutton-icon,
-.customization-palette .toolbarbutton-1 > .toolbarbutton-badge-container,
+.customization-palette .toolbarbutton-1 > .toolbarbutton-badge-stack,
 .panelUI-grid #bookmarks-toolbar-placeholder > .toolbarbutton-icon,
 .customization-palette #bookmarks-toolbar-placeholder > .toolbarbutton-icon,
 .panel-customization-placeholder-child > .toolbarbutton-icon {
@@ -461,8 +461,8 @@ toolbaritem[cui-areatype="menu-panel"][sdkstylewidget="true"]:not(.panel-wide-it
 /* above we treat the container as the icon for the margins, that is so the
 /* badge itself is positioned correctly. Here we make sure that the icon itself
 /* has the minimum size we want, but no padding/margin. */
-.panelUI-grid .toolbarbutton-1 > .toolbarbutton-badge-container > .toolbarbutton-icon,
-.customization-palette .toolbarbutton-1 > .toolbarbutton-badge-container > .toolbarbutton-icon {
+.panelUI-grid .toolbarbutton-1 > .toolbarbutton-badge-stack > .toolbarbutton-icon,
+.customization-palette .toolbarbutton-1 > .toolbarbutton-badge-stack > .toolbarbutton-icon {
   width: 32px;
   height: 32px;
   min-width: 32px;
diff --git a/browser/themes/shared/menupanel.inc.css b/browser/themes/shared/menupanel.inc.css
index 4d07ff8dd24..785d0fac2d8 100644
--- a/browser/themes/shared/menupanel.inc.css
+++ b/browser/themes/shared/menupanel.inc.css
@@ -191,39 +191,39 @@
     -moz-image-region: rect(0, 832px, 32px, 800px);
   }
 
-  #loop-button[cui-areatype="menu-panel"] > .toolbarbutton-badge-container,
-  toolbarpaletteitem[place="palette"] > #loop-button > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"],
+  toolbarpaletteitem[place="palette"] > #loop-button {
     list-style-image: url(chrome://browser/skin/loop/menuPanel.png);
     -moz-image-region: rect(0, 32px, 32px, 0);
   }
 
   /* Make sure that the state icons are not shown in the customization palette. */
-  toolbarpaletteitem[place="palette"] > #loop-button > .toolbarbutton-badge-container {
+  toolbarpaletteitem[place="palette"] > #loop-button {
     -moz-image-region: rect(0, 32px, 32px, 0) !important;
   }
 
-  #loop-button[cui-areatype="menu-panel"][state="disabled"] > .toolbarbutton-badge-container,
-  #loop-button[cui-areatype="menu-panel"][disabled="true"] > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"][state="disabled"],
+  #loop-button[cui-areatype="menu-panel"][disabled="true"] {
     -moz-image-region: rect(0, 64px, 32px, 32px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="error"] > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="error"] {
     -moz-image-region: rect(0, 96px, 32px, 64px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="action"] > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="action"] {
     -moz-image-region: rect(0, 128px, 32px, 96px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="action"]:-moz-any(:hover,:hover:active,[open]) > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="action"]:-moz-any(:hover,:hover:active,[open]) {
     -moz-image-region: rect(0, 160px, 32px, 128px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="active"] > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="active"] {
     -moz-image-region: rect(0, 192px, 32px, 160px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="active"]:-moz-any(:hover,:hover:active,[open]) > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="active"]:-moz-any(:hover,:hover:active,[open]) {
     -moz-image-region: rect(0, 224px, 32px, 192px);
   }
 
@@ -375,39 +375,39 @@
     -moz-image-region: rect(64px, 1984px, 128px, 1920px);
   }
 
-  #loop-button[cui-areatype="menu-panel"] > .toolbarbutton-badge-container,
-  toolbarpaletteitem[place="palette"] > #loop-button > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"],
+  toolbarpaletteitem[place="palette"] > #loop-button {
     list-style-image: url(chrome://browser/skin/loop/menuPanel@2x.png);
     -moz-image-region: rect(0, 64px, 64px, 0);
   }
 
   /* Make sure that the state icons are not shown in the customization palette. */
-  toolbarpaletteitem[place="palette"] > #loop-button > .toolbarbutton-badge-container {
+  toolbarpaletteitem[place="palette"] > #loop-button {
     -moz-image-region: rect(0, 64px, 64px, 0) !important;
   }
 
-  #loop-button[cui-areatype="menu-panel"][state="disabled"] > .toolbarbutton-badge-container,
-  #loop-button[cui-areatype="menu-panel"][disabled="true"] > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"][state="disabled"],
+  #loop-button[cui-areatype="menu-panel"][disabled="true"] {
     -moz-image-region: rect(0, 128px, 64px, 64px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="error"] > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="error"] {
     -moz-image-region: rect(0, 192px, 64px, 128px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="action"] > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="action"] {
     -moz-image-region: rect(0, 256px, 64px, 192px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="action"]:-moz-any(:hover,:hover:active,[open]) > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="action"]:-moz-any(:hover,:hover:active,[open]) {
     -moz-image-region: rect(0, 320px, 64px, 256px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="active"] > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="active"] {
     -moz-image-region: rect(0, 384px, 64px, 320px);
   }
 
-  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="active"]:-moz-any(:hover,:hover:active,[open]) > .toolbarbutton-badge-container {
+  #loop-button[cui-areatype="menu-panel"]:not([disabled="true"])[state="active"]:-moz-any(:hover,:hover:active,[open]) {
     -moz-image-region: rect(0, 448px, 64px, 384px);
   }
 
diff --git a/browser/themes/shared/toolbarbuttons.inc.css b/browser/themes/shared/toolbarbuttons.inc.css
index 9979bc6b704..4cafa3d117d 100644
--- a/browser/themes/shared/toolbarbuttons.inc.css
+++ b/browser/themes/shared/toolbarbuttons.inc.css
@@ -184,37 +184,37 @@ toolbar[brighttext] #sync-button[status="active"] {
   -moz-image-region: rect(0, 720px, 18px, 702px);
 }
 
-#loop-button > .toolbarbutton-badge-container {
+#loop-button {
   list-style-image: url(chrome://browser/skin/loop/toolbar.png);
   -moz-image-region: rect(0, 18px, 18px, 0);
 }
 
-toolbar[brighttext] #loop-button > .toolbarbutton-badge-container {
+toolbar[brighttext] #loop-button {
   list-style-image: url(chrome://browser/skin/loop/toolbar-inverted.png);
 }
 
-#loop-button[state="disabled"] > .toolbarbutton-badge-container,
-#loop-button[disabled="true"] > .toolbarbutton-badge-container {
+#loop-button[state="disabled"],
+#loop-button[disabled="true"] {
   -moz-image-region: rect(0, 36px, 18px, 18px);
 }
 
-#loop-button:not([disabled="true"])[state="error"] > .toolbarbutton-badge-container {
+#loop-button:not([disabled="true"])[state="error"] {
   -moz-image-region: rect(0, 54px, 18px, 36px);
 }
 
-#loop-button:not([disabled="true"])[state="action"] > .toolbarbutton-badge-container {
+#loop-button:not([disabled="true"])[state="action"] {
   -moz-image-region: rect(0, 72px, 18px, 54px);
 }
 
-#loop-button:not([disabled="true"])[state="action"]:-moz-any(:hover,:hover:active,[open]) > .toolbarbutton-badge-container {
+#loop-button:not([disabled="true"])[state="action"]:-moz-any(:hover,:hover:active,[open]) {
   -moz-image-region: rect(0, 90px, 18px, 72px);
 }
 
-#loop-button:not([disabled="true"])[state="active"] > .toolbarbutton-badge-container {
+#loop-button:not([disabled="true"])[state="active"] {
   -moz-image-region: rect(0, 108px, 18px, 90px);
 }
 
-#loop-button:not([disabled="true"])[state="active"]:-moz-any(:hover,:hover:active,[open]) > .toolbarbutton-badge-container {
+#loop-button:not([disabled="true"])[state="active"]:-moz-any(:hover,:hover:active,[open]) {
   -moz-image-region: rect(0, 126px, 18px, 108px);
 }
 
@@ -430,37 +430,37 @@ toolbar[brighttext] #loop-button > .toolbarbutton-badge-container {
 %endif
   }
 
-  #loop-button > .toolbarbutton-badge-container {
+  #loop-button {
     list-style-image: url("chrome://browser/skin/loop/toolbar@2x.png");
     -moz-image-region: rect(0, 36px, 36px, 0);
   }
 
-  toolbar[brighttext] #loop-button > .toolbarbutton-badge-container {
+  toolbar[brighttext] #loop-button {
     list-style-image: url("chrome://browser/skin/loop/toolbar-inverted@2x.png");
   }
 
-  #loop-button[state="disabled"] > .toolbarbutton-badge-container,
-  #loop-button[disabled="true"] > .toolbarbutton-badge-container {
+  #loop-button[state="disabled"],
+  #loop-button[disabled="true"] {
     -moz-image-region: rect(0, 72px, 36px, 36px);
   }
 
-  #loop-button:not([disabled="true"])[state="error"] > .toolbarbutton-badge-container {
+  #loop-button:not([disabled="true"])[state="error"] {
     -moz-image-region: rect(0, 108px, 36px, 72px);
   }
 
-  #loop-button:not([disabled="true"])[state="action"] > .toolbarbutton-badge-container {
+  #loop-button:not([disabled="true"])[state="action"] {
     -moz-image-region: rect(0, 144px, 36px, 108px);
   }
 
-  #loop-button:not([disabled="true"])[state="action"]:-moz-any(:hover,:hover:active,[open]) > .toolbarbutton-badge-container {
+  #loop-button:not([disabled="true"])[state="action"]:-moz-any(:hover,:hover:active,[open]) {
     -moz-image-region: rect(0, 180px, 36px, 144px);
   }
 
-  #loop-button:not([disabled="true"])[state="active"] > .toolbarbutton-badge-container {
+  #loop-button:not([disabled="true"])[state="active"] {
     -moz-image-region: rect(0, 216px, 36px, 180px);
   }
 
-  #loop-button:not([disabled="true"])[state="active"]:-moz-any(:hover,:hover:active,[open]) > .toolbarbutton-badge-container {
+  #loop-button:not([disabled="true"])[state="active"]:-moz-any(:hover,:hover:active,[open]) {
     -moz-image-region: rect(0, 252px, 36px, 216px);
   }
 }
diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
index c3bc087f617..57f24877f9b 100644
--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -593,13 +593,13 @@ menuitem.bookmark-item {
     list-style-image: url("chrome://browser/skin/Toolbar-lunaSilver.png");
   }
 
-  #loop-button > .toolbarbutton-badge-container {
+  #loop-button {
     list-style-image: url(chrome://browser/skin/loop/toolbar-lunaSilver.png)
   }
 }
 
 @media (-moz-windows-theme: luna-silver) and (min-resolution: 1.1dppx) {
-  #loop-button > .toolbarbutton-badge-container {
+  #loop-button {
     list-style-image: url(chrome://browser/skin/loop/toolbar-lunaSilver@2x.png)
   }
 }
@@ -674,7 +674,7 @@ toolbar[brighttext] .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
 .findbar-button > .toolbarbutton-text,
 #nav-bar .toolbarbutton-1 > .toolbarbutton-icon,
 #nav-bar .toolbarbutton-1 > .toolbarbutton-text,
-#nav-bar .toolbarbutton-1 > .toolbarbutton-badge-container,
+#nav-bar .toolbarbutton-1 > .toolbarbutton-badge-stack,
 #nav-bar .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
 #nav-bar .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
 @conditionalForwardWithUrlbar@ > .toolbarbutton-1:-moz-any([disabled],:not([open]):not([disabled]):not(:active)) > .toolbarbutton-icon {
@@ -687,7 +687,7 @@ toolbar[brighttext] .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
 
 toolbarbutton[cui-areatype="toolbar"] > :-moz-any(@nestedButtons@) > .toolbarbutton-icon,
 :-moz-any(@primaryToolbarButtons@):-moz-any([cui-areatype="toolbar"],:not([cui-areatype])):not(:-moz-any(@nestedButtons@)) > .toolbarbutton-icon,
-:-moz-any(@primaryToolbarButtons@):-moz-any([cui-areatype="toolbar"],:not([cui-areatype])) > .toolbarbutton-badge-container > .toolbarbutton-icon,
+:-moz-any(@primaryToolbarButtons@):-moz-any([cui-areatype="toolbar"],:not([cui-areatype])) > .toolbarbutton-badge-stack > .toolbarbutton-icon,
 :-moz-any(@primaryToolbarButtons@):-moz-any([cui-areatype="toolbar"],:not([cui-areatype])) > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
 #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
   width: 18px;
@@ -728,7 +728,7 @@ toolbarbutton[cui-areatype="toolbar"] > :-moz-any(@nestedButtons@) > .toolbarbut
   .findbar-button > .toolbarbutton-text,
   #nav-bar .toolbarbutton-1 > .toolbarbutton-icon,
   #nav-bar .toolbarbutton-1 > .toolbarbutton-text,
-  #nav-bar .toolbarbutton-1 > .toolbarbutton-badge-container,
+  #nav-bar .toolbarbutton-1 > .toolbarbutton-badge-stack,
   #nav-bar .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
   #nav-bar .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
     background-color: hsla(210,32%,93%,0);
@@ -744,14 +744,14 @@ toolbarbutton[cui-areatype="toolbar"] > :-moz-any(@nestedButtons@) > .toolbarbut
 }
 
 #nav-bar .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutton-icon,
-#nav-bar .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutton-badge-container,
+#nav-bar .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutton-badge-stack,
 #nav-bar .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@)) > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
   padding: calc(var(--toolbarbutton-vertical-inner-padding) + 1px) 7px;
 }
 
 /* Help SDK icons fit: */
 toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-container > .toolbarbutton-icon {
+toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
   width: 16px;
 }
 
@@ -821,7 +821,7 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 #nav-bar .toolbarbutton-1:not([disabled=true]):-moz-any(:hover,[open]) > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
 #nav-bar .toolbarbutton-1:not([disabled=true]):not([checked]):not([open]):not(:active):hover > .toolbarbutton-icon,
 #nav-bar .toolbarbutton-1:not([disabled=true]):not([checked]):not([open]):not(:active):hover > .toolbarbutton-text,
-#nav-bar .toolbarbutton-1:not([disabled=true]):not([checked]):not([open]):not(:active):hover > .toolbarbutton-badge-container,
+#nav-bar .toolbarbutton-1:not([disabled=true]):not([checked]):not([open]):not(:active):hover > .toolbarbutton-badge-stack,
 @conditionalForwardWithUrlbar@ > #forward-button:not([open]):not(:active):not([disabled]):hover > .toolbarbutton-icon,
 #nav-bar .toolbarbutton-1:not([buttonover]):not([open]):not(:active):hover > .toolbarbutton-menubutton-dropmarker:not([disabled]) > .dropmarker-icon {
   background: var(--toolbarbutton-hover-background);
@@ -866,7 +866,7 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 #nav-bar .toolbarbutton-1[open] > .toolbarbutton-menubutton-dropmarker:not([disabled=true]) > .dropmarker-icon,
 #nav-bar .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-icon,
 #nav-bar .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-text,
-#nav-bar .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-badge-container {
+#nav-bar .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-badge-stack {
   background: var(--toolbarbutton-active-background);
   border-color: var(--toolbarbutton-active-bordercolor);
   box-shadow: var(--toolbarbutton-active-boxshadow);
@@ -882,7 +882,7 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
   #nav-bar .toolbarbutton-1[open] > .toolbarbutton-menubutton-dropmarker:not([disabled]) > .dropmarker-icon,
   #nav-bar .toolbarbutton-1:not([disabled]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-icon,
   #nav-bar .toolbarbutton-1:not([disabled]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-text,
-  #nav-bar .toolbarbutton-1:not([disabled]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-badge-container {
+  #nav-bar .toolbarbutton-1:not([disabled]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-badge-stack {
     text-shadow: none;
     transition: none;
   }
diff --git a/toolkit/content/widgets/toolbarbutton.xml b/toolkit/content/widgets/toolbarbutton.xml
index 1bc10ff66c7..d8000a83b25 100644
--- a/toolkit/content/widgets/toolbarbutton.xml
+++ b/toolkit/content/widgets/toolbarbutton.xml
@@ -85,10 +85,10 @@
            extends="chrome://global/content/bindings/toolbarbutton.xml#toolbarbutton">
     <content>
       <children includes="observes|template|menupopup|panel|tooltip"/>
-      <xul:hbox class="toolbarbutton-badge-container" align="start" pack="end">
-        <xul:hbox class="toolbarbutton-badge" xbl:inherits="badge"/>
+      <xul:stack class="toolbarbutton-badge-stack">
         <xul:image class="toolbarbutton-icon" xbl:inherits="validate,src=image,label"/>
-      </xul:hbox>
+        <xul:label class="toolbarbutton-badge" xbl:inherits="value=badge" top="0" end="0"/>
+      </xul:stack>
       <xul:label class="toolbarbutton-text" crop="right" flex="1"
                  xbl:inherits="value=label,accesskey,crop,wrap"/>
       <xul:label class="toolbarbutton-multiline-text" flex="1"
@@ -100,10 +100,10 @@
            extends="chrome://global/content/bindings/toolbarbutton.xml#toolbarbutton">
     <content>
       <children includes="observes|template|menupopup|panel|tooltip"/>
-      <xul:hbox class="toolbarbutton-badge-container" align="start" pack="end">
-        <xul:hbox class="toolbarbutton-badge" xbl:inherits="badge"/>
+      <xul:stack class="toolbarbutton-badge-stack">
         <xul:image class="toolbarbutton-icon" xbl:inherits="validate,src=image,label"/>
-      </xul:hbox>
+        <xul:label class="toolbarbutton-badge" xbl:inherits="value=badge" top="0" end="0"/>
+      </xul:stack>
       <xul:label class="toolbarbutton-text" crop="right" flex="1"
                  xbl:inherits="value=label,accesskey,crop,dragover-top,wrap"/>
       <xul:label class="toolbarbutton-multiline-text" flex="1"
diff --git a/toolkit/content/xul.css b/toolkit/content/xul.css
index e3fc95651bc..808174403c8 100644
--- a/toolkit/content/xul.css
+++ b/toolkit/content/xul.css
@@ -134,8 +134,9 @@ toolbarbutton.badged-button {
   -moz-binding: url("chrome://global/content/bindings/toolbarbutton.xml#toolbarbutton-badged");
 }
 
-.toolbarbutton-badge[badge]:not([badge=""])::after {
-  content: attr(badge);
+.toolbarbutton-badge:not([value]),
+.toolbarbutton-badge[value=""] {
+  display: none;
 }
 
 toolbarbutton[type="menu"],
diff --git a/toolkit/themes/linux/global/toolbarbutton.css b/toolkit/themes/linux/global/toolbarbutton.css
index 4a11f72df2e..a66d4dc59c2 100644
--- a/toolkit/themes/linux/global/toolbarbutton.css
+++ b/toolkit/themes/linux/global/toolbarbutton.css
@@ -109,34 +109,20 @@ toolbarbutton[type="menu-button"][disabled="true"]:hover:active {
 
 .toolbarbutton-badge {
   background-color: #d90000;
-}
-
-.toolbarbutton-badge::after {
-  /* The |content| property is set in the content stylesheet. */
   font-size: 10px;
   font-weight: bold;
-  padding: 1px 2px 2px;
+  padding: 1px 2px;
   color: #fff;
-  background-color: inherit;
   border-radius: 2px;
   box-shadow: 0 1px 0 hsla(0, 100%, 100%, .2) inset,
               0 -1px 0 hsla(0, 0%, 0%, .1) inset,
               0 1px 0 hsla(206, 50%, 10%, .2);
-  position: absolute;
-  top: -4px;
-  right: -2px;
+  margin: -4px 0 0 !important;
+  -moz-margin-end: -2px !important;
   min-width: 10px;
   line-height: 10px;
   text-align: center;
-}
-
-.toolbarbutton-badge:-moz-locale-dir(rtl)::after {
-  left: -2px;
-  right: auto;
-}
-
-.toolbarbutton-badge-container {
-  position: relative;
+  -moz-stack-sizing: ignore;
 }
 
 /* .......... dropmarker .......... */
diff --git a/toolkit/themes/osx/global/toolbarbutton.css b/toolkit/themes/osx/global/toolbarbutton.css
index 2cfd452eadf..b7f889ea25e 100644
--- a/toolkit/themes/osx/global/toolbarbutton.css
+++ b/toolkit/themes/osx/global/toolbarbutton.css
@@ -80,49 +80,30 @@ toolbarbutton[type="menu-button"][disabled="true"]:hover:active {
 
 .toolbarbutton-badge {
   background-color: #d90000;
-}
-
-.toolbarbutton-badge::after {
-  /* The |content| property is set in the content stylesheet. */
   font-size: 9px;
-  padding: 1px 2px 2px;
+  padding: 1px 2px;
   color: #fff;
-  background-color: inherit;
   border-radius: 2px;
   box-shadow: 0 1px 0 hsla(0, 100%, 100%, .2) inset,
               0 -1px 0 hsla(0, 0%, 0%, .1) inset,
               0 1px 0 hsla(206, 50%, 10%, .2);
-  position: absolute;
-  top: -8px;
-  right: -8px;
-  z-index: 1;
+  margin: -8px 0 0 !important;
+  -moz-margin-end: -8px !important;
   min-width: 10px;
   line-height: 10px;
   text-align: center;
+  -moz-stack-sizing: ignore;
 }
 
-.toolbarbutton-badge:-moz-window-inactive::after {
+.toolbarbutton-badge:-moz-window-inactive {
   background-color: rgb(230,230,230);
   box-shadow: none;
   border: 1px solid rgb(206,206,206);
   color: rgb(192,192,192);
 }
 
-.toolbarbutton-badge:-moz-locale-dir(rtl)::after {
-  left: -8px;
-  right: auto;
-}
-
-toolbar[mode="icons"] > *|* > .toolbarbutton-badge::after {
-  right: -10px;
-}
-
-toolbar[mode="icons"] > *|* > .toolbarbutton-badge:-moz-locale-dir(rtl)::after {
-  left: -10px;
-}
-
-.toolbarbutton-badge-container {
-  position: relative;
+toolbar[mode="icons"] > *|* > .toolbarbutton-badge {
+  -moz-margin-end: -10px !important;
 }
 
 /* .......... dropmarker .......... */
diff --git a/toolkit/themes/windows/global/toolbarbutton.css b/toolkit/themes/windows/global/toolbarbutton.css
index 5a98132eabf..42cb4986468 100644
--- a/toolkit/themes/windows/global/toolbarbutton.css
+++ b/toolkit/themes/windows/global/toolbarbutton.css
@@ -146,44 +146,26 @@ toolbarbutton[type="menu-button"][disabled="true"]:hover:active {
 
 /* ::::: toolbarbutton badged ::::: */
 
-.toolbarbutton-badge-container > .toolbarbutton-icon[label]:not([label=""]) {
+.toolbarbutton-badge-stack > .toolbarbutton-icon[label]:not([label=""]) {
   -moz-margin-end: 0;
 }
 
-.toolbarbutton-badge[badge=""] {
-  display: none;
-}
-
 .toolbarbutton-badge {
   background-color: #d90000;
-}
-
-.toolbarbutton-badge::after {
-  /* The |content| property is set in the content stylesheet. */
   font-size: 10px;
   font-weight: bold;
-  padding: 1px 2px 2px;
+  padding: 1px 2px;
   color: #fff;
-  background-color: inherit;
   border-radius: 2px;
   box-shadow: 0 1px 0 hsla(0, 100%, 100%, .2) inset,
               0 -1px 0 hsla(0, 0%, 0%, .1) inset,
               0 1px 0 hsla(206, 50%, 10%, .2);
-  position: absolute;
-  top: -4px;
-  right: -2px;
+  margin: -4px 0 0 !important;
+  -moz-margin-end: -2px !important;
   min-width: 10px;
   line-height: 10px;
   text-align: center;
-}
-
-.toolbarbutton-badge:-moz-locale-dir(rtl)::after {
-  left: -2px;
-  right: auto;
-}
-
-.toolbarbutton-badge-container {
-  position: relative;
+  -moz-stack-sizing: ignore;
 }
 
 /* .......... dropmarker .......... */