diff --git a/site/static/docs/4.3/assets/scss/_sidebar.scss b/site/static/docs/4.3/assets/scss/_sidebar.scss
index be7c9d50cd..5a5e607600 100644
--- a/site/static/docs/4.3/assets/scss/_sidebar.scss
+++ b/site/static/docs/4.3/assets/scss/_sidebar.scss
@@ -10,6 +10,8 @@
       position: sticky;
       top: 5rem;
       z-index: 1000;
+      height: calc(100vh - 7rem);
+      overflow-y: auto;
     }
   }