diff --git a/book/pages/layout_demo.ipynb b/book/pages/layout_demo.ipynb
index 2c5d241..0e34751 100644
--- a/book/pages/layout_demo.ipynb
+++ b/book/pages/layout_demo.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Layout Demo"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 1,