diff --git a/packages/console/src/notebook/Editor.scss b/packages/console/src/notebook/Editor.scss
index be6b500713..f0dc290500 100644
--- a/packages/console/src/notebook/Editor.scss
+++ b/packages/console/src/notebook/Editor.scss
@@ -15,3 +15,18 @@
     color: $link-color;
   }
 }
+
+// Override Monaco's default markdown popups (i.e signature help) to resemble VS Code closer
+// The classes come from Monaco itself, not core or web-client-ui
+.rendered-markdown.markdown-docs {
+  min-width: 12rem;
+  
+  hr {
+    background-color: $text-muted;
+    height: 1px;
+  }
+
+  blockquote {
+    margin-left: $spacer-4;
+  }
+}