diff --git a/00-Outlook.ipynb b/00-Outlook.ipynb
index bf9dd183605915dbb789e9dc0243a6a15bf5b063..9eb755c9470f2b7096b69a41327dcfb11b52ddd1 100644
--- a/00-Outlook.ipynb
+++ b/00-Outlook.ipynb
@@ -11,38 +11,6 @@
     "![](images/title_intro_python.png)"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {
-    "slideshow": {
-     "slide_type": "skip"
-    }
-   },
-   "outputs": [
-    {
-     "data": {
-      "text/html": [
-       "<style>\n",
-       "h1 { font-size: 50pt !important; color:white !important; background-color:#e00a3e !important; padding:100px 10px 100px 10px !important; text-align:center !important; }\n",
-       "h2 { color:white !important; background-color:#e00a3e !important; padding:10px !important; text-align:center !important; }\n",
-       "</stile>\n"
-      ],
-      "text/plain": [
-       "<IPython.core.display.HTML object>"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "import os\n",
-    "from IPython.core.display import HTML\n",
-    "HTML(filename=os.path.join(os.path.abspath('images'),'css'))"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -185,7 +153,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.4+"
+   "version": "3.6.5"
   }
  },
  "nbformat": 4,
diff --git a/01-Introduction_to_Python.ipynb b/01-Introduction_to_Python.ipynb
index cfc1e0b0de303e278593f9d1e41e059c0a8e6d54..201fb193c69750d4cf3e75c48183dacc4151f4f3 100644
--- a/01-Introduction_to_Python.ipynb
+++ b/01-Introduction_to_Python.ipynb
@@ -11,38 +11,6 @@
     "![](images/title_intro_python.png)"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {
-    "slideshow": {
-     "slide_type": "skip"
-    }
-   },
-   "outputs": [
-    {
-     "data": {
-      "text/html": [
-       "<style>\n",
-       "h1 { font-size: 50pt !important; color:white !important; background-color:#e00a3e !important; padding:100px 10px 100px 10px !important; text-align:center !important; }\n",
-       "h2 { color:white !important; background-color:#e00a3e !important; padding:10px !important; text-align:center !important; }\n",
-       "</stile>\n"
-      ],
-      "text/plain": [
-       "<IPython.core.display.HTML object>"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "import os\n",
-    "from IPython.core.display import HTML\n",
-    "HTML(filename=os.path.join(os.path.abspath('images'),'css'))"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -6759,7 +6727,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.4+"
+   "version": "3.6.5"
   },
   "widgets": {
    "state": {},
diff --git a/02-Introduction_to_Python.ipynb b/02-Introduction_to_Python.ipynb
index 9b82467c7151a4acbf8d0603742b2c6e8e39656f..ea3e7c14e65ffe53caf3162f0e896b7235f9709d 100644
--- a/02-Introduction_to_Python.ipynb
+++ b/02-Introduction_to_Python.ipynb
@@ -11,38 +11,6 @@
     "![](images/title_intro_python.png)"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {
-    "slideshow": {
-     "slide_type": "skip"
-    }
-   },
-   "outputs": [
-    {
-     "data": {
-      "text/html": [
-       "<style>\n",
-       "h1 { font-size: 50pt !important; color:white !important; background-color:#e00a3e !important; padding:100px 10px 100px 10px !important; text-align:center !important; }\n",
-       "h2 { color:white !important; background-color:#e00a3e !important; padding:10px !important; text-align:center !important; }\n",
-       "</stile>\n"
-      ],
-      "text/plain": [
-       "<IPython.core.display.HTML object>"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "import os\n",
-    "from IPython.core.display import HTML\n",
-    "HTML(filename=os.path.join(os.path.abspath('images'),'css'))"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -3945,7 +3913,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.4+"
+   "version": "3.6.5"
   }
  },
  "nbformat": 4,
diff --git a/03-Introduction_to_Python.ipynb b/03-Introduction_to_Python.ipynb
index 7cb5d38c070724912993105b62828363fdaf9e1b..c090d08dcf9c88f54ab8f19e3f26dca95469fa40 100644
--- a/03-Introduction_to_Python.ipynb
+++ b/03-Introduction_to_Python.ipynb
@@ -11,38 +11,6 @@
     "![](images/title_intro_python.png)"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {
-    "slideshow": {
-     "slide_type": "skip"
-    }
-   },
-   "outputs": [
-    {
-     "data": {
-      "text/html": [
-       "<style>\n",
-       "h1 { font-size: 50pt !important; color:white !important; background-color:#e00a3e !important; padding:100px 10px 100px 10px !important; text-align:center !important; }\n",
-       "h2 { color:white !important; background-color:#e00a3e !important; padding:10px !important; text-align:center !important; }\n",
-       "</stile>\n"
-      ],
-      "text/plain": [
-       "<IPython.core.display.HTML object>"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "import os\n",
-    "from IPython.core.display import HTML\n",
-    "HTML(filename=os.path.join(os.path.abspath('images'),'css'))"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -4484,7 +4452,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.4+"
+   "version": "3.6.5"
   }
  },
  "nbformat": 4,
diff --git a/04-Introduction_to_Python.ipynb b/04-Introduction_to_Python.ipynb
index 6f04afebb4a483ba70c776352b82d931c880648e..f1f3e55420e0ee85fe6dfe22a64897f8453de56c 100644
--- a/04-Introduction_to_Python.ipynb
+++ b/04-Introduction_to_Python.ipynb
@@ -11,38 +11,6 @@
     "![](images/title_intro_python.png)"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {
-    "slideshow": {
-     "slide_type": "skip"
-    }
-   },
-   "outputs": [
-    {
-     "data": {
-      "text/html": [
-       "<style>\n",
-       "h1 { font-size: 50pt !important; color:white !important; background-color:#e00a3e !important; padding:100px 10px 100px 10px !important; text-align:center !important; }\n",
-       "h2 { color:white !important; background-color:#e00a3e !important; padding:10px !important; text-align:center !important; }\n",
-       "</stile>\n"
-      ],
-      "text/plain": [
-       "<IPython.core.display.HTML object>"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "import os\n",
-    "from IPython.core.display import HTML\n",
-    "HTML(filename=os.path.join(os.path.abspath('images'),'css'))"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -2255,7 +2223,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.4+"
+   "version": "3.6.5"
   }
  },
  "nbformat": 4,