diff --git a/browser/base/content/browser.css b/browser/base/content/browser.css
--- a/browser/base/content/browser.css
+++ b/browser/base/content/browser.css
@@ -917,21 +917,21 @@ chatbox:-moz-full-screen-ancestor > .cha
 }

 /* Give this menupopup an arrow panel styling */
 #BMB_bookmarksPopup {
   -moz-appearance: none;
   -moz-binding: url("chrome://browser/content/places/menu.xml#places-popup-arrow");
   background: transparent;
   border: none;
-  transform: scale(.1);
+  transform: scale(.7);
   opacity: 0;
   transition-property: transform, opacity;
-  transition-duration: 0.25s;
-  transition-timing-function: cubic-bezier(.6, 1.0, .65, 1.0), ease;
+  transition-duration: 0.15s;
+  transition-timing-function: ease;
   /* The popup inherits -moz-image-region from the button, must reset it */
   -moz-image-region: auto;
 }

 #BMB_bookmarksPopup[animate="open"] {
   transform: none;
   opacity: 1.0;
 }
@@ -949,22 +949,22 @@ chatbox:-moz-full-screen-ancestor > .cha
 }

 #BMB_bookmarksPopup[arrowposition="before_end"] {
   transform-origin: calc(100% - 20px) bottom;
 }

 #BMB_bookmarksPopup[arrowposition="after_start"][animate="cancel"],
 #BMB_bookmarksPopup[arrowposition="before_end"][animate="cancel"] {
-  transform: scale(.1) skew(30deg, 20deg);
+  transform: scale(.7) skew(10deg, 10deg);
 }

 #BMB_bookmarksPopup[arrowposition="after_end"][animate="cancel"],
 #BMB_bookmarksPopup[arrowposition="before_start"][animate="cancel"] {
-  transform: scale(.1) skew(-30deg, -20deg);
+  transform: scale(.7) skew(-10deg, -10deg);
 }

 /* Customize mode */
 #navigator-toolbox,
 #content-deck {
   transition-property: margin-left, margin-right;
   transition-duration: 200ms;
   transition-timing-function: linear;
diff --git a/toolkit/content/xul.css b/toolkit/content/xul.css
--- a/toolkit/content/xul.css
+++ b/toolkit/content/xul.css
@@ -422,21 +422,21 @@ tooltip {
   margin-top: 21px;
 }

 panel[type="arrow"] {
   -moz-binding: url("chrome://global/content/bindings/popup.xml#arrowpanel");
 }

 panel[type="arrow"]:not([animate="false"]) {
-  transform: scale(.1);
+  transform: scale(.8);
   opacity: 0;
   transition-property: transform, opacity;
-  transition-duration: 0.25s;
-  transition-timing-function: cubic-bezier(.6, 1.0, .65, 1.0), ease;
+  transition-duration: 0.15s;
+  transition-timing-function: ease;
 }

 panel[type="arrow"][animate="open"] {
   transform: none;
   opacity: 1.0;
 }

 panel[arrowposition="after_start"] {
@@ -470,24 +470,24 @@ panel[arrowposition="end_before"] {
 panel[arrowposition="end_after"] {
   transform-origin: left calc(100% - 20px);
 }

 panel[arrowposition="after_start"][animate="cancel"],
 panel[arrowposition="before_end"][animate="cancel"],
 panel[arrowposition="end_before"][animate="cancel"],
 panel[arrowposition="start_after"][animate="cancel"] {
-  transform: scale(.1) skew(30deg, 20deg);
+  transform: scale(.6) skew(10deg, 10deg);
 }

 panel[arrowposition="after_end"][animate="cancel"],
 panel[arrowposition="before_start"][animate="cancel"],
 panel[arrowposition="start_before"][animate="cancel"],
 panel[arrowposition="end_after"][animate="cancel"] {
-  transform: scale(.1) skew(-30deg, -20deg);
+  transform: scale(.6) skew(-10deg, -10deg);
 }

 %ifdef XP_MACOSX
 .statusbar-resizerpanel {
   display: none;
 }
 %else
 window[sizemode="maximized"] statusbarpanel.statusbar-resizerpanel {