--- a/browser/themes/linux/browser.css
+++ b/browser/themes/linux/browser.css
@@ -1220,17 +1220,18 @@ html|span.ac-emphasize-text-url {
 
 /* Combined go/reload/stop button in location bar */
 
 #urlbar-go-button,
 #urlbar-reload-button,
 #urlbar-stop-button {
   -moz-appearance: none;
   list-style-image: url("chrome://browser/skin/reload-stop-go.png");
-  padding: 0 9px;
+  margin: -2px 0;
+  padding: 3px 9px;
   margin-inline-start: 5px;
   border-inline-start: 1px solid var(--urlbar-separator-color);
   border-image: linear-gradient(transparent 15%,
                                 var(--urlbar-separator-color) 15%,
                                 var(--urlbar-separator-color) 85%,
                                 transparent 85%);
   border-image-slice: 1;
 }

--- a/browser/themes/osx/browser.css
+++ b/browser/themes/osx/browser.css
@@ -1811,19 +1811,19 @@ html|span.ac-emphasize-text-url {
 }
 
 
 /* ----- COMBINED GO/RELOAD/STOP BUTTON IN LOCATION BAR ----- */
 
 #urlbar-go-button,
 #urlbar-reload-button,
 #urlbar-stop-button {
-  margin: 0;
   list-style-image: url("chrome://browser/skin/reload-stop-go.png");
-  padding: 0 9px;
+  margin: -2px 0;
+  padding: 3px 9px;
   margin-inline-start: 5px;
   border-inline-start: 1px solid var(--urlbar-separator-color);
   border-image: linear-gradient(transparent 15%,
                                 var(--urlbar-separator-color) 15%,
                                 var(--urlbar-separator-color) 85%,
                                 transparent 85%);
   border-image-slice: 1;
 }

--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -1584,17 +1584,18 @@ html|span.ac-emphasize-text-url {
 /* combined go/reload/stop button in location bar */
 
 #urlbar-go-button,
 #urlbar-reload-button,
 #urlbar-stop-button {
   -moz-appearance: none;
   border-style: none;
   list-style-image: url("chrome://browser/skin/reload-stop-go.png");
-  padding: 0 9px;
+  margin: -1px 0;
+  padding: 3px 9px;
   margin-inline-start: 5px;
   border-inline-start: 1px solid var(--urlbar-separator-color);
   border-image: linear-gradient(transparent 15%,
                                 var(--urlbar-separator-color) 15%,
                                 var(--urlbar-separator-color) 85%,
                                 transparent 85%);
   border-image-slice: 1;
 }