diff --git a/book/pages/linear_constrained_optimization_example.ipynb b/book/pages/linear_constrained_optimization_example.ipynb
index e8e0b1f..0eb97e5 100644
--- a/book/pages/linear_constrained_optimization_example.ipynb
+++ b/book/pages/linear_constrained_optimization_example.ipynb
@@ -44,6 +44,18 @@
     "- Bounds: book are only transported from distribution centers to stores."
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Find best solution manually\n",
+    "\n",
+    ":::{card} Test yourself\n",
+    "Try and adjust the book transports yourself. Can you find the optimal solution?\n",
+    "<iframe src=\"../_static/books.html\" style=\"overflow:hidden;height:650;width:100%\" height=\"650\" width=\"100%\"> frameborder=\"0\"></iframe>\n",
+    ":::"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -195,18 +207,6 @@
     "```"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Find best solution manually\n",
-    "\n",
-    ":::{card} Test yourself\n",
-    "Try and adjust the book transports yourself. Can you find the optimal solution?\n",
-    "<iframe src=\"../_static/books.html\" style=\"overflow:hidden;height:650;width:100%\" height=\"650\" width=\"100%\"> frameborder=\"0\"></iframe>\n",
-    ":::"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},