diff --git a/core/modules/toolbar/css/toolbar.theme.css b/core/modules/toolbar/css/toolbar.theme.css
index 981ee00..0b6ab2a 100644
--- a/core/modules/toolbar/css/toolbar.theme.css
+++ b/core/modules/toolbar/css/toolbar.theme.css
@@ -31,6 +31,7 @@
   background-color: #0f0f0f;
   box-shadow: -1px 0 3px 1px rgba(0, 0, 0, 0.3333); /* LTR */
   color: #dddddd;
+  position: fixed;
 }
 [dir="rtl"] .toolbar .toolbar-bar {
   box-shadow: 1px 0 3px 1px rgba(0, 0, 0, 0.3333);
diff --git a/core/themes/stable/css/toolbar/toolbar.theme.css b/core/themes/stable/css/toolbar/toolbar.theme.css
index 981ee00..0b6ab2a 100644
--- a/core/themes/stable/css/toolbar/toolbar.theme.css
+++ b/core/themes/stable/css/toolbar/toolbar.theme.css
@@ -31,6 +31,7 @@
   background-color: #0f0f0f;
   box-shadow: -1px 0 3px 1px rgba(0, 0, 0, 0.3333); /* LTR */
   color: #dddddd;
+  position: fixed;
 }
 [dir="rtl"] .toolbar .toolbar-bar {
   box-shadow: 1px 0 3px 1px rgba(0, 0, 0, 0.3333);