diff --git a/css/userContent-files/about_pages.css b/css/userContent-files/about_pages.css
index 952c459..88e535b 100644
--- a/css/userContent-files/about_pages.css
+++ b/css/userContent-files/about_pages.css
@@ -378,7 +378,8 @@ url-prefix(https://discovery.addons.mozilla.org) {
   }
   .toolbar {
     background-color: var(--in-content-category-header-background)!important;
-    border-right: 1px solid!important
+    border-right: 1px solid!important;
+    border-color: var(--in-content-box-border-color)!important
   }
   .toolbar .button {
     background-color: var(--in-content-category-header-background)!important;
diff --git a/userContent.css b/userContent.css
index 09a993f..2ad30d0 100644
--- a/userContent.css
+++ b/userContent.css
@@ -588,7 +588,8 @@ url-prefix(https://discovery.addons.mozilla.org) {
   }
   .toolbar {
     background-color: var(--in-content-category-header-background)!important;
-    border-right: 1px solid!important
+    border-right: 1px solid!important;
+    border-color: var(--in-content-box-border-color)!important
   }
   .toolbar .button {
     background-color: var(--in-content-category-header-background)!important;