diff --git a/modules/primer-navigation/lib/underline-nav.scss b/modules/primer-navigation/lib/underline-nav.scss
index e86a63a4..d93cc0bc 100644
--- a/modules/primer-navigation/lib/underline-nav.scss
+++ b/modules/primer-navigation/lib/underline-nav.scss
@@ -72,8 +72,7 @@
 
   .container-lg,
   .container-md,
-  .container-xl
-   {
+  .container-xl {
     display: flex;
     justify-content: space-between;
   }