diff --git a/core/modules/toolbar/css/toolbar.theme.css b/core/modules/toolbar/css/toolbar.theme.css
index 981ee00..5d77b8d 100644
--- a/core/modules/toolbar/css/toolbar.theme.css
+++ b/core/modules/toolbar/css/toolbar.theme.css
@@ -158,6 +158,9 @@
 }
 .toolbar .toolbar-toggle-orientation > .toolbar-lining {
   float: right; /* LTR */
+  position: relative;
+  top: 50%;
+  transform: translateY(-50%);
 }
 [dir="rtl"] .toolbar .toolbar-toggle-orientation > .toolbar-lining {
   float: left;