diff --git a/core/misc/dialog/off-canvas.layout.css b/core/misc/dialog/off-canvas.layout.css
index d79d26cd3e..3b2b52e387 100644
--- a/core/misc/dialog/off-canvas.layout.css
+++ b/core/misc/dialog/off-canvas.layout.css
@@ -1,8 +1,6 @@
 /**
  * @file
- * Visual styling for layouts in the off canvas tray.
- *
- * See seven/css/layout/layout.css
+ * Visual styling for layouts in the off-canvas dialog.
  */
 
 .layout-icon__region {
diff --git a/core/themes/seven/css/layout/layout.css b/core/themes/seven/css/layout/layout.css
index 39649e43c1..eb7c2bf0b3 100644
--- a/core/themes/seven/css/layout/layout.css
+++ b/core/themes/seven/css/layout/layout.css
@@ -4,11 +4,3 @@
 .page-content {
   margin-bottom: 80px;
 }
-
-/**
- * Add color to layout icons.
- */
-.layout-icon__region {
-  fill: #f5f5f2;
-  stroke: #666;
-}
diff --git a/core/themes/stable/css/core/dialog/off-canvas.layout.css b/core/themes/stable/css/core/dialog/off-canvas.layout.css
new file mode 100644
index 0000000000..3b2b52e387
--- /dev/null
+++ b/core/themes/stable/css/core/dialog/off-canvas.layout.css
@@ -0,0 +1,9 @@
+/**
+ * @file
+ * Visual styling for layouts in the off-canvas dialog.
+ */
+
+.layout-icon__region {
+  fill: #f5f5f2;
+  stroke: #666;
+}
diff --git a/core/themes/stable/stable.info.yml b/core/themes/stable/stable.info.yml
index 1e437f9d4c..957a65cf35 100644
--- a/core/themes/stable/stable.info.yml
+++ b/core/themes/stable/stable.info.yml
@@ -72,6 +72,7 @@ libraries-override:
         misc/dialog/off-canvas.details.css: css/core/dialog/off-canvas.details.css
         misc/dialog/off-canvas.tabledrag.css: css/core/dialog/off-canvas.tabledrag.css
         misc/dialog/off-canvas.dropbutton.css: css/core/dialog/off-canvas.dropbutton.css
+        misc/dialog/off-canvas.layout.css: css/core/dialog/off-canvas.layout.css
 
   core/drupal.dropbutton:
     css: