diff --git a/docs/docs-beta/src/styles/custom.scss b/docs/docs-beta/src/styles/custom.scss
index 80d3c8d91ad19..2acc97b1f0580 100644
--- a/docs/docs-beta/src/styles/custom.scss
+++ b/docs/docs-beta/src/styles/custom.scss
@@ -112,7 +112,7 @@ a.pyobject {
   h2 {
     border-top: 1px;
     border-top-style: solid;
-    border-top-color: var(--theme-color-text-light);
+    border-top-color: var(--theme-color-keyline);
     margin-top: 0px;
     padding-top: calc(var(--ifm-heading-vertical-rhythm-bottom) * var(--ifm-leading))
   }