Fixed the style of some titles to better fit the screen

flisol-cordoba-2023.ipynb

@@ -79,7 +79,7 @@
    "source": [
     "## ¿Cómo continúa esta frase?\n",
     "\n",
-    "<h2 style=\"text-align:center;font-weight:normal;\">You ...</h2>"
+    "<h2 style=\"text-align:center;font-weight:normal;font-size:1.3em;\">You ...</h2>"
    ]
   },
   {
@@ -91,7 +91,7 @@
     }
    },
    "source": [
-    "<h2 style=\"text-align:center;font-weight:normal;\">You shall ...</h2>"
+    "<h2 style=\"text-align:center;font-weight:normal;font-size:1.3em;\">You shall ...</h2>"
    ]
   },
   {
@@ -103,7 +103,7 @@
     }
    },
    "source": [
-    "<h2 style=\"text-align:center;font-weight:normal;\">You shall not ...</h2>"
+    "<h2 style=\"text-align:center;font-weight:normal;font-size:1.3em;\">You shall not ...</h2>"
    ]
   },
   {
@@ -116,7 +116,7 @@
    },
    "source": [
     "<div style=\"text-align:center;\">\n",
-    "    <h2 style=\"font-weight:normal;\">You shall not pass!</h2>\n",
+    "    <h2 style=\"font-weight:normal;font-size:1.3em;\">You shall not pass!</h2>\n",
     "    <div style=\"display:inline-block;margin-top:10px;\">\n",
     "        <img src=\"./img/gandalf.gif\" style=\"height:10em;width:auto;\"/>\n",
     "    </div>\n",