diff --git a/modules/addressbook/web/css/pages/address-book-index.css b/modules/addressbook/web/css/pages/address-book-index.css
index 7b69e27..727d5e4 100644
--- a/modules/addressbook/web/css/pages/address-book-index.css
+++ b/modules/addressbook/web/css/pages/address-book-index.css
@@ -1,4 +1,4 @@
-@layer pages;
+@layer pages {
 
 /* Address book list — dense identity layout */
 
@@ -143,3 +143,5 @@
     max-width: 100%;
   }
 }
+
+} /* end @layer pages */