diff --git a/core/modules/file/file.libraries.yml b/core/modules/file/file.libraries.yml
index ccc0c3b..def38d9 100644
--- a/core/modules/file/file.libraries.yml
+++ b/core/modules/file/file.libraries.yml
@@ -2,9 +2,6 @@ drupal.file:
   version: VERSION
   js:
     file.js: {}
-  css:
-    theme:
-      css/file.admin.css: {}
   dependencies:
     - core/jquery
     - core/jquery.once
diff --git a/core/themes/classy/classy.libraries.yml b/core/themes/classy/classy.libraries.yml
index eb5e0b2..575d3e6 100644
--- a/core/themes/classy/classy.libraries.yml
+++ b/core/themes/classy/classy.libraries.yml
@@ -11,6 +11,7 @@ base:
       css/components/exposed-filters.css: { weight: -10 }
       css/components/field.css: { weight: -10 }
       css/components/form.css: { weight: -10 }
+      css/components/form-managed-file.css: { weight: -10 }
       css/components/icons.css: { weight: -10 }
       css/components/inline-form.css: { weight: -10 }
       css/components/item-list.css: { weight: -10 }
diff --git a/core/modules/file/css/file.admin.css b/core/themes/classy/css/components/form-managed-file.css
similarity index 100%
rename from core/modules/file/css/file.admin.css
rename to core/themes/classy/css/components/form-managed-file.css