diff --git a/app/cara.ipynb b/app/cara.ipynb
index 906bf165..37a7cb0e 100644
--- a/app/cara.ipynb
+++ b/app/cara.ipynb
@@ -288,4 +288,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
+}
\ No newline at end of file
diff --git a/app/covid-calculator.ipynb b/app/covid-calculator.ipynb
index e0d61f35..67ae19c1 100644
--- a/app/covid-calculator.ipynb
+++ b/app/covid-calculator.ipynb
@@ -2,14 +2,55 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "metadata": {
     "collapsed": true
    },
    "outputs": [],
    "source": [
-    "import ipywidgets as widgets"
+    "from ipywidgets import Label, Layout, Text, VBox"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "outputs": [
+    {
+     "data": {
+      "text/plain": "VBox(children=(Label(value='CARA Covid Calculator', layout=Layout(width='100%')), Text(value='', description='…",
+      "application/vnd.jupyter.widget-view+json": {
+       "version_major": 2,
+       "version_minor": 0,
+       "model_id": "81c2850558b347f0b3040231351aba9f"
+      }
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "title = Label(\"CARA Covid Calculator\")\n",
+    "simulation_text = Text(\n",
+    "    placeholder=\"E.g. Workshop without masks\",\n",
+    "    description=\"Simulation name: \"\n",
+    ")\n",
+    "room_number_text = Text(\n",
+    "    placeholder=\"E.g. 17/R-033\",\n",
+    "    description=\"Room number: \"\n",
+    ")\n",
+    "\n",
+    "intro = VBox(\n",
+    "    children=(title, simulation_text, room_number_text)\n",
+    ")\n",
+    "\n",
+    "intro\n"
+   ],
+   "metadata": {
+    "collapsed": false,
+    "pycharm": {
+     "name": "#%%\n"
+    }
+   }
   }
  ],
  "metadata": {