diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f73806e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.ipynb_checkpoints/
\ No newline at end of file
diff --git a/notebooks/hotair.ipynb b/notebooks/hotair.ipynb
index 466d2f4..5e4a510 100644
--- a/notebooks/hotair.ipynb
+++ b/notebooks/hotair.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "07f8c98b-84ac-4365-a15b-7521e8e0a281",
+   "id": "25ff728c-ed95-4d35-ade5-7254bae85240",
    "metadata": {
     "extensions": {
      "jupyter_dashboards": {
@@ -20,8 +20,8 @@
     }
    },
    "source": [
-    "## Hot air balloon (box shape)\n",
-    "### Lift calculator\n"
+    "## Hot air balloon - lift calculator\n",
+    "### Box shape\n"
    ]
   },
   {