diff --git a/app/covid-calculator.ipynb b/app/covid-calculator.ipynb
index 52ad5c35..15f4517d 100644
--- a/app/covid-calculator.ipynb
+++ b/app/covid-calculator.ipynb
@@ -11,7 +11,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 42,
    "metadata": {
     "pycharm": {
      "name": "#%%\n"
@@ -20,11 +20,11 @@
    "outputs": [
     {
      "data": {
-      "text/plain": "VBox(children=(HTML(value='<font size=\"+2\"><b>CARA</b> Covid Calculator</font>'), Text(value='', placeholder='…",
+      "text/plain": "VBox(children=(HTML(value='<font size=\"+2\"><b>CARA</b> Covid Calculator</font>'), Text(value='', description='…",
       "application/vnd.jupyter.widget-view+json": {
        "version_major": 2,
        "version_minor": 0,
-       "model_id": "b6dfcf9858f24a84bf9bac4918b328a5"
+       "model_id": "cb4016cbd61a455780fd5b7d9b8585db"
       }
      },
      "metadata": {},
@@ -33,25 +33,40 @@
    ],
    "source": [
     "intro = w.VBox(children=(w.HTML(value='<font size=\"+2\"><b>CARA</b> Covid Calculator</font>'),\n",
-    "                         w.Text(placeholder=\"Simulation name\"),\n",
-    "                         w.Text(placeholder=\"Room number\")))\n",
+    "                         w.Text(placeholder=\"E.g. Workshop without masks\", description=\"Simulation name:\",\n",
+    "                                style={'description_width': '35%'}),\n",
+    "                         w.Text(placeholder=\"E.g. 17/R-033\", description=\"Room number:\",\n",
+    "                                style={'description_width': '35%'})))\n",
     "\n",
     "intro"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 20,
+   "execution_count": 34,
    "metadata": {
     "pycharm": {
      "name": "#%%\n"
     }
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": "VBox(children=(Text(value='', description='Room volume', placeholder='Room volume (m³)', style=DescriptionStyl…",
+      "application/vnd.jupyter.widget-view+json": {
+       "version_major": 2,
+       "version_minor": 0,
+       "model_id": "152f11e8cd014cd5847392b559a4424b"
+      }
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
    "source": [
-    "volume_text = w.Text(placeholder=\"Room volume (m³)\")\n",
-    "area_text = w.Text(placeholder=\"Room floor area (m²)\")\n",
-    "height_text = w.Text(placeholder=\"Room ceiling height (m²)\")\n",
+    "volume_text = w.Text(placeholder=\"Room volume (m³)\", description=\"Room volume\")\n",
+    "area_text = w.Text(placeholder=\"Room floor area (m²)\", description=\"Floor area\")\n",
+    "height_text = w.Text(placeholder=\"Room ceiling height (m²)\", description=\"Ceiling height\")\n",
     "\n",
     "room_dimensions_box = w.VBox(children=(volume_text, w.Label(value=\"------- OR -------\"),area_text, height_text),\n",
     "                             layout=w.Layout(align_items='center'))\n",
@@ -60,9 +75,15 @@
     "    area_text.disabled = bool(volume_text.value)\n",
     "    height_text.disabled = bool(volume_text.value)\n",
     "\n",
+    "for text in [volume_text, area_text, height_text]:\n",
+    "    text.observe(manage_text_fields)\n",
+    "    text.style.description_width = \"50%\"\n",
+    "\n",
     "volume_text.observe(manage_text_fields)\n",
     "area_text.observe(manage_text_fields)\n",
-    "height_text.observe(manage_text_fields)"
+    "height_text.observe(manage_text_fields)\n",
+    "\n",
+    "room_dimensions_box"
    ]
   }
  ],