diff --git a/core/modules/system/css/components/position-container.module.css b/core/modules/system/css/components/position-container.module.css
deleted file mode 100644
index ae209f3aa614b9437226ba8bb9637bdd7b4e8e86..0000000000000000000000000000000000000000
--- a/core/modules/system/css/components/position-container.module.css
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * @file
- * Contain positioned elements.
- */
-
-.position-container {
-  position: relative;
-}
diff --git a/core/modules/system/system.libraries.yml b/core/modules/system/system.libraries.yml
index 43ba61011fc51236188adedd9e60d7a877d3cc21..398a57c990bd85d45f5f7551e87f065949e4e07a 100644
--- a/core/modules/system/system.libraries.yml
+++ b/core/modules/system/system.libraries.yml
@@ -9,7 +9,6 @@ base:
       css/components/hidden.module.css: { weight: -10 }
       css/components/item-list.module.css: { weight: -10 }
       css/components/js.module.css: { weight: -10 }
-      css/components/position-container.module.css: { weight: -10 }
       css/components/reset-appearance.module.css: { weight: -10 }
       css/components/tablesort.module.css: { weight: -10 }
 
diff --git a/core/themes/claro/css/components/tabs.css b/core/themes/claro/css/components/tabs.css
index 523d3c604084c727cf310a59de28c5bac38bb4b3..438e796d775abdcfe88270517bdfddbf1757f538 100644
--- a/core/themes/claro/css/components/tabs.css
+++ b/core/themes/claro/css/components/tabs.css
@@ -172,6 +172,10 @@
   box-shadow: none;
 }
 
+.position-container {
+  position: relative;
+}
+
 @media screen and (min-width: 48em) {
   .tabs-wrapper {
     display: flex;
diff --git a/core/themes/claro/css/components/tabs.pcss.css b/core/themes/claro/css/components/tabs.pcss.css
index 6e89d17441242e979d2aa2ee07262cd7a900b9df..25a46ffec5fa23856402da5cc6430142dafd520d 100644
--- a/core/themes/claro/css/components/tabs.pcss.css
+++ b/core/themes/claro/css/components/tabs.pcss.css
@@ -152,6 +152,10 @@
   }
 }
 
+.position-container {
+  position: relative;
+}
+
 @media screen and (min-width: 48em) {
   .tabs-wrapper {
     display: flex;
diff --git a/core/themes/stable9/stable9.info.yml b/core/themes/stable9/stable9.info.yml
index b91f163b0ad7fa759712ed78899ff8b7620dc64f..560a372cce03cd047344eb37bc9e19dfd661bc09 100644
--- a/core/themes/stable9/stable9.info.yml
+++ b/core/themes/stable9/stable9.info.yml
@@ -236,6 +236,7 @@ libraries-override:
         css/components/item-list.module.css: css/system/components/item-list.module.css
         css/components/js.module.css: css/system/components/js.module.css
         css/components/position-container.module.css: css/system/components/position-container.module.css
+        css/components/nowrap.module.css: css/system/components/nowrap.module.css
         css/components/reset-appearance.module.css: css/system/components/reset-appearance.module.css
         css/components/tablesort.module.css: css/system/components/tablesort.module.css
   system/admin: