diff --git a/src/base/base.scss b/src/base/base.scss
index 57fc7d89..63a9eb56 100644
--- a/src/base/base.scss
+++ b/src/base/base.scss
@@ -45,7 +45,7 @@ hr,
   overflow: hidden;
   background: transparent;
   border: 0;
-  border-bottom: $border-width $border-style var(--color-border-tertiary);
+  border-bottom: $border-width $border-style var(--color-border-primary);
   @include clearfix();
 }