diff --git a/inst/tutorials/Grundlagen/Grundlagen.Rmd b/inst/tutorials/Grundlagen/Grundlagen.Rmd
index bb26823..1bcd214 100644
--- a/inst/tutorials/Grundlagen/Grundlagen.Rmd
+++ b/inst/tutorials/Grundlagen/Grundlagen.Rmd
@@ -85,23 +85,216 @@ $(document).ready(function() {
   
 });
 
-  var _paq = window._paq = window._paq || [];
-  /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
-  _paq.push(["setRequestMethod", "POST"]);
-  _paq.push(['enableHeartBeatTimer', 5]);
-  _paq.push(['disableAlwaysUseSendBeacon']);
-  _paq.push(["setDoNotTrack", false]);
-  _paq.push(["setDomains", ["*.otter.uni-frankfurt.de", "*.otter-test.uni-frankfurt.de", "127.0.0.1"]]);
-  //_paq.push(["setCookieDomain", "*.otter.uni-frankfurt.de"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://otter.uni-frankfurt.de/otterusers/";
-    _paq.push(['setTrackerUrl', u+'m.php']);
-    _paq.push(['setSiteId', '1']);
-    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
-    g.async=true; g.src=u+'m.js'; s.parentNode.insertBefore(g,s);
-  })();
+
+/*! js-cookie v3.0.1 | MIT */
+;
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, (function () {
+    var current = global.Cookies;
+    var exports = global.Cookies = factory();
+    exports.noConflict = function () { global.Cookies = current; return exports; };
+  }()));
+}(this, (function () { 'use strict';
+
+  /* eslint-disable no-var */
+  function assign (target) {
+    for (var i = 1; i < arguments.length; i++) {
+      var source = arguments[i];
+      for (var key in source) {
+        target[key] = source[key];
+      }
+    }
+    return target
+  }
+  /* eslint-enable no-var */
+
+  /* eslint-disable no-var */
+  var defaultConverter = {
+    read: function (value) {
+      if (value[0] === '"') {
+        value = value.slice(1, -1);
+      }
+      return value.replace(/(%[\dA-F]{2})+/gi, decodeURIComponent)
+    },
+    write: function (value) {
+      return encodeURIComponent(value).replace(
+        /%(2[346BF]|3[AC-F]|40|5[BDE]|60|7[BCD])/g,
+        decodeURIComponent
+      )
+    }
+  };
+  /* eslint-enable no-var */
+
+  /* eslint-disable no-var */
+
+  function init (converter, defaultAttributes) {
+    function set (key, value, attributes) {
+      if (typeof document === 'undefined') {
+        return
+      }
+
+      attributes = assign({}, defaultAttributes, attributes);
+
+      if (typeof attributes.expires === 'number') {
+        attributes.expires = new Date(Date.now() + attributes.expires * 864e5);
+      }
+      if (attributes.expires) {
+        attributes.expires = attributes.expires.toUTCString();
+      }
+
+      key = encodeURIComponent(key)
+        .replace(/%(2[346B]|5E|60|7C)/g, decodeURIComponent)
+        .replace(/[()]/g, escape);
+
+      var stringifiedAttributes = '';
+      for (var attributeName in attributes) {
+        if (!attributes[attributeName]) {
+          continue
+        }
+
+        stringifiedAttributes += '; ' + attributeName;
+
+        if (attributes[attributeName] === true) {
+          continue
+        }
+
+        // Considers RFC 6265 section 5.2:
+        // ...
+        // 3.  If the remaining unparsed-attributes contains a %x3B (";")
+        //     character:
+        // Consume the characters of the unparsed-attributes up to,
+        // not including, the first %x3B (";") character.
+        // ...
+        stringifiedAttributes += '=' + attributes[attributeName].split(';')[0];
+      }
+
+      return (document.cookie =
+        key + '=' + converter.write(value, key) + stringifiedAttributes)
+    }
+
+    function get (key) {
+      if (typeof document === 'undefined' || (arguments.length && !key)) {
+        return
+      }
+
+      // To prevent the for loop in the first place assign an empty array
+      // in case there are no cookies at all.
+      var cookies = document.cookie ? document.cookie.split('; ') : [];
+      var jar = {};
+      for (var i = 0; i < cookies.length; i++) {
+        var parts = cookies[i].split('=');
+        var value = parts.slice(1).join('=');
+
+        try {
+          var foundKey = decodeURIComponent(parts[0]);
+          jar[foundKey] = converter.read(value, foundKey);
+
+          if (key === foundKey) {
+            break
+          }
+        } catch (e) {}
+      }
+
+      return key ? jar[key] : jar
+    }
+
+    return Object.create(
+      {
+        set: set,
+        get: get,
+        remove: function (key, attributes) {
+          set(
+            key,
+            '',
+            assign({}, attributes, {
+              expires: -1
+            })
+          );
+        },
+        withAttributes: function (attributes) {
+          return init(this.converter, assign({}, this.attributes, attributes))
+        },
+        withConverter: function (converter) {
+          return init(assign({}, this.converter, converter), this.attributes)
+        }
+      },
+      {
+        attributes: { value: Object.freeze(defaultAttributes) },
+        converter: { value: Object.freeze(converter) }
+      }
+    )
+  }
+
+  var api = init(defaultConverter, { path: '/' });
+  /* eslint-enable no-var */
+
+  return api;
+
+})));
+
+var _paq = window._paq = window._paq || [];
+jQuery(document).ready(function() {
+   const cookiebanner = `<div class="modal modal-dialog-scrollable modal-dialog-centered modal-dialog-scrollable fade" id="staticBackdrop" data-backdrop="static" data-keyboard="false" tabindex="-1" aria-labelledby="staticBackdropLabel" aria-hidden="true" style="justify-content: end; margin: unset !important;">
+    <div class="modal-dialog" style="display: flex; align-self: end; margin: unset !important;">
+        <div class="modal-content">
+        <div class="modal-body">
+            <p>Wir ben&ouml;tigen Ihre Zustimmung, bevor Sie unsere Website weiter besuchen k&ouml;nnen.</p>
+            <p>Wir verwenden Cookies und andere Technologien auf unserer Webseite. Einige von ihnen sind essenziell, w&auml;hrend andere uns helfen, diese Webseite und Ihr Benutzungserlebnis zu verbessern. Personenbezogene Daten k&ouml;nnen verarbeitet werden (z.B. IP-Adressen), z.B. Anzeigen- und Inhaltsmessung (Tracking). Weitere Informationen &uuml;ber die Verwendung Ihrer Daten finden Sie in unserer Datenschutzerkl&auml;rung. Sie k&ouml;nnen Ihre Auswahl jederzeit unter Einstellungen widerrufen oder anpassen.</p>
+        </div>
+        <div class="modal-footer">
+            <a type="button" class="btn btn-light" href="https://meikesteinhilber.github.io/otter/">Ich m&ouml;chte Otter nicht nutzen.</a>
+            <button type="button" class="btn btn-success" id="cookie-okay">Ich bin einverstanden.</button>
+        </div>
+        </div>  
+    </div>
+    </div>`;
+
+    const loadScripts = function() {
+        /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+        _paq.push(["setRequestMethod", "POST"]);
+        _paq.push(['enableHeartBeatTimer', 5]);
+        _paq.push(['disableAlwaysUseSendBeacon']);
+        _paq.push(["setDoNotTrack", false]);
+        _paq.push(["setDomains", ["*.otter.uni-frankfurt.de", "*.otter-test.uni-frankfurt.de", "127.0.0.1"]]);
+        //_paq.push(["setCookieDomain", "*.otter.uni-frankfurt.de"]);
+        _paq.push(['trackPageView']);
+        _paq.push(['enableLinkTracking']);
+        (function() {
+        var u="https://otter.uni-frankfurt.de/otterusers/";
+        _paq.push(['setTrackerUrl', u+'m.php']);
+        _paq.push(['setSiteId', '1']);
+        var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+        g.async=true; g.src=u+'m.js'; s.parentNode.insertBefore(g,s);
+        })();
+    };
+
+    const consent = Cookies.get('cnsnt');
+    if(consent == undefined || consent == "0") {
+        jQuery("body").append(jQuery(cookiebanner));
+        jQuery('#cookie-okay').on("click", function() {
+            Cookies.set('cnsnt', '1', { expires: 180, sameSite: 'strict' });
+            loadScripts();
+
+            jQuery('#staticBackdrop').modal("hide");
+        });
+
+        jQuery('#cookie-nokay').on("click", function() {
+            Cookies.set('cnsnt', '0', { expires: 30, sameSite: 'strict' });
+        });
+
+        jQuery('#staticBackdrop').on('hidden.bs.show', function (event) {
+            jQuery(this).css('display', 'flex');
+        });
+
+        jQuery('#staticBackdrop').modal({backdrop: false, show: true, keyboard: false});
+    } else if(consent == "1" || consent === 1) {
+        loadScripts();
+    }
+});
+
+
 
 </script>
 
diff --git a/inst/tutorials/Grundlagen/Grundlagen.html b/inst/tutorials/Grundlagen/Grundlagen.html
index e281d37..dabd93e 100644
--- a/inst/tutorials/Grundlagen/Grundlagen.html
+++ b/inst/tutorials/Grundlagen/Grundlagen.html
@@ -182,23 +182,216 @@
   
 });
 
-  var _paq = window._paq = window._paq || [];
-  /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
-  _paq.push(["setRequestMethod", "POST"]);
-  _paq.push(['enableHeartBeatTimer', 5]);
-  _paq.push(['disableAlwaysUseSendBeacon']);
-  _paq.push(["setDoNotTrack", false]);
-  _paq.push(["setDomains", ["*.otter.uni-frankfurt.de", "*.otter-test.uni-frankfurt.de", "127.0.0.1"]]);
-  //_paq.push(["setCookieDomain", "*.otter.uni-frankfurt.de"]);
-  _paq.push(['trackPageView']);
-  _paq.push(['enableLinkTracking']);
-  (function() {
-    var u="https://otter.uni-frankfurt.de/otterusers/";
-    _paq.push(['setTrackerUrl', u+'m.php']);
-    _paq.push(['setSiteId', '1']);
-    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
-    g.async=true; g.src=u+'m.js'; s.parentNode.insertBefore(g,s);
-  })();
+
+/*! js-cookie v3.0.1 | MIT */
+;
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, (function () {
+    var current = global.Cookies;
+    var exports = global.Cookies = factory();
+    exports.noConflict = function () { global.Cookies = current; return exports; };
+  }()));
+}(this, (function () { 'use strict';
+
+  /* eslint-disable no-var */
+  function assign (target) {
+    for (var i = 1; i < arguments.length; i++) {
+      var source = arguments[i];
+      for (var key in source) {
+        target[key] = source[key];
+      }
+    }
+    return target
+  }
+  /* eslint-enable no-var */
+
+  /* eslint-disable no-var */
+  var defaultConverter = {
+    read: function (value) {
+      if (value[0] === '"') {
+        value = value.slice(1, -1);
+      }
+      return value.replace(/(%[\dA-F]{2})+/gi, decodeURIComponent)
+    },
+    write: function (value) {
+      return encodeURIComponent(value).replace(
+        /%(2[346BF]|3[AC-F]|40|5[BDE]|60|7[BCD])/g,
+        decodeURIComponent
+      )
+    }
+  };
+  /* eslint-enable no-var */
+
+  /* eslint-disable no-var */
+
+  function init (converter, defaultAttributes) {
+    function set (key, value, attributes) {
+      if (typeof document === 'undefined') {
+        return
+      }
+
+      attributes = assign({}, defaultAttributes, attributes);
+
+      if (typeof attributes.expires === 'number') {
+        attributes.expires = new Date(Date.now() + attributes.expires * 864e5);
+      }
+      if (attributes.expires) {
+        attributes.expires = attributes.expires.toUTCString();
+      }
+
+      key = encodeURIComponent(key)
+        .replace(/%(2[346B]|5E|60|7C)/g, decodeURIComponent)
+        .replace(/[()]/g, escape);
+
+      var stringifiedAttributes = '';
+      for (var attributeName in attributes) {
+        if (!attributes[attributeName]) {
+          continue
+        }
+
+        stringifiedAttributes += '; ' + attributeName;
+
+        if (attributes[attributeName] === true) {
+          continue
+        }
+
+        // Considers RFC 6265 section 5.2:
+        // ...
+        // 3.  If the remaining unparsed-attributes contains a %x3B (";")
+        //     character:
+        // Consume the characters of the unparsed-attributes up to,
+        // not including, the first %x3B (";") character.
+        // ...
+        stringifiedAttributes += '=' + attributes[attributeName].split(';')[0];
+      }
+
+      return (document.cookie =
+        key + '=' + converter.write(value, key) + stringifiedAttributes)
+    }
+
+    function get (key) {
+      if (typeof document === 'undefined' || (arguments.length && !key)) {
+        return
+      }
+
+      // To prevent the for loop in the first place assign an empty array
+      // in case there are no cookies at all.
+      var cookies = document.cookie ? document.cookie.split('; ') : [];
+      var jar = {};
+      for (var i = 0; i < cookies.length; i++) {
+        var parts = cookies[i].split('=');
+        var value = parts.slice(1).join('=');
+
+        try {
+          var foundKey = decodeURIComponent(parts[0]);
+          jar[foundKey] = converter.read(value, foundKey);
+
+          if (key === foundKey) {
+            break
+          }
+        } catch (e) {}
+      }
+
+      return key ? jar[key] : jar
+    }
+
+    return Object.create(
+      {
+        set: set,
+        get: get,
+        remove: function (key, attributes) {
+          set(
+            key,
+            '',
+            assign({}, attributes, {
+              expires: -1
+            })
+          );
+        },
+        withAttributes: function (attributes) {
+          return init(this.converter, assign({}, this.attributes, attributes))
+        },
+        withConverter: function (converter) {
+          return init(assign({}, this.converter, converter), this.attributes)
+        }
+      },
+      {
+        attributes: { value: Object.freeze(defaultAttributes) },
+        converter: { value: Object.freeze(converter) }
+      }
+    )
+  }
+
+  var api = init(defaultConverter, { path: '/' });
+  /* eslint-enable no-var */
+
+  return api;
+
+})));
+
+var _paq = window._paq = window._paq || [];
+jQuery(document).ready(function() {
+   const cookiebanner = `<div class="modal modal-dialog-scrollable modal-dialog-centered modal-dialog-scrollable fade" id="staticBackdrop" data-backdrop="static" data-keyboard="false" tabindex="-1" aria-labelledby="staticBackdropLabel" aria-hidden="true" style="justify-content: end; margin: unset !important;">
+    <div class="modal-dialog" style="display: flex; align-self: end; margin: unset !important;">
+        <div class="modal-content">
+        <div class="modal-body">
+            <p>Wir ben&ouml;tigen Ihre Zustimmung, bevor Sie unsere Website weiter besuchen k&ouml;nnen.</p>
+            <p>Wir verwenden Cookies und andere Technologien auf unserer Webseite. Einige von ihnen sind essenziell, w&auml;hrend andere uns helfen, diese Webseite und Ihr Benutzungserlebnis zu verbessern. Personenbezogene Daten k&ouml;nnen verarbeitet werden (z.B. IP-Adressen), z.B. Anzeigen- und Inhaltsmessung (Tracking). Weitere Informationen &uuml;ber die Verwendung Ihrer Daten finden Sie in unserer Datenschutzerkl&auml;rung. Sie k&ouml;nnen Ihre Auswahl jederzeit unter Einstellungen widerrufen oder anpassen.</p>
+        </div>
+        <div class="modal-footer">
+            <a type="button" class="btn btn-light" href="https://meikesteinhilber.github.io/otter/">Ich m&ouml;chte Otter nicht nutzen.</a>
+            <button type="button" class="btn btn-success" id="cookie-okay">Ich bin einverstanden.</button>
+        </div>
+        </div>  
+    </div>
+    </div>`;
+
+    const loadScripts = function() {
+        /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+        _paq.push(["setRequestMethod", "POST"]);
+        _paq.push(['enableHeartBeatTimer', 5]);
+        _paq.push(['disableAlwaysUseSendBeacon']);
+        _paq.push(["setDoNotTrack", false]);
+        _paq.push(["setDomains", ["*.otter.uni-frankfurt.de", "*.otter-test.uni-frankfurt.de", "127.0.0.1"]]);
+        //_paq.push(["setCookieDomain", "*.otter.uni-frankfurt.de"]);
+        _paq.push(['trackPageView']);
+        _paq.push(['enableLinkTracking']);
+        (function() {
+        var u="https://otter.uni-frankfurt.de/otterusers/";
+        _paq.push(['setTrackerUrl', u+'m.php']);
+        _paq.push(['setSiteId', '1']);
+        var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+        g.async=true; g.src=u+'m.js'; s.parentNode.insertBefore(g,s);
+        })();
+    };
+
+    const consent = Cookies.get('cnsnt');
+    if(consent == undefined || consent == "0") {
+        jQuery("body").append(jQuery(cookiebanner));
+        jQuery('#cookie-okay').on("click", function() {
+            Cookies.set('cnsnt', '1', { expires: 180, sameSite: 'strict' });
+            loadScripts();
+
+            jQuery('#staticBackdrop').modal("hide");
+        });
+
+        jQuery('#cookie-nokay').on("click", function() {
+            Cookies.set('cnsnt', '0', { expires: 30, sameSite: 'strict' });
+        });
+
+        jQuery('#staticBackdrop').on('hidden.bs.show', function (event) {
+            jQuery(this).css('display', 'flex');
+        });
+
+        jQuery('#staticBackdrop').modal({backdrop: false, show: true, keyboard: false});
+    } else if(consent == "1" || consent === 1) {
+        loadScripts();
+    }
+});
+
+
 
 </script>
 <!-- <div class="menu-button">Menu</div> -->
@@ -5142,16 +5335,16 @@ <h2>R Chunk (freies Üben)</h2>
  
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "quiz-na-1", question = structure("Was ist die Länge der Variable <code>variable = logical(3)<\u002fcode>?", html = TRUE, class = c("html", 
-"character")), answers = list(structure(list(id = "lnr_ans_95ce6d4", 
+"character")), answers = list(structure(list(id = "lnr_ans_6ac4a2", 
     option = "0", value = "0", label = structure("0", html = TRUE, class = c("html", 
     "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-"tutorial_quiz_answer")), structure(list(id = "lnr_ans_dce67f3", 
+"tutorial_quiz_answer")), structure(list(id = "lnr_ans_4effda9", 
     option = "1", value = "1", label = structure("1", html = TRUE, class = c("html", 
     "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-"tutorial_quiz_answer")), structure(list(id = "lnr_ans_b1a25", 
+"tutorial_quiz_answer")), structure(list(id = "lnr_ans_51ee914", 
     option = "3", value = "3", label = structure("3", html = TRUE, class = c("html", 
     "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-"tutorial_quiz_answer")), structure(list(id = "lnr_ans_ca365cb", 
+"tutorial_quiz_answer")), structure(list(id = "lnr_ans_788fb0a", 
     option = "Es gibt keine sinnvolle Antwort auf diese Frage.", 
     value = "Es gibt keine sinnvolle Antwort auf diese Frage.", 
     label = structure("Es gibt keine sinnvolle Antwort auf diese Frage.", html = TRUE, class = c("html", 
@@ -5163,7 +5356,7 @@ <h2>R Chunk (freies Üben)</h2>
 "character")), incorrect = structure("Leider falsch!", html = TRUE, class = c("html", 
 "character")), message = NULL, post_message = NULL), ids = list(
     answer = "quiz-na-1-answer", question = "quiz-na-1"), loading = NULL, 
-    random_answer_order = TRUE, allow_retry = TRUE, seed = 427557359.300903, 
+    random_answer_order = TRUE, allow_retry = TRUE, seed = 1055981007.00827, 
     options = list()), class = c("learnr_radio", "tutorial_question"
 )), session = session)
 </script>
@@ -5171,17 +5364,17 @@ <h2>R Chunk (freies Üben)</h2>
 
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "quiz-na-2", question = structure("Was passiert, wenn dieser Befehl ausgeführt wird: <code>NaN &lt; 0<\u002fcode>?", html = TRUE, class = c("html", 
-"character")), answers = list(structure(list(id = "lnr_ans_6349114", 
+"character")), answers = list(structure(list(id = "lnr_ans_f4b4b8e", 
     option = "Es gibt eine Fehlermeldung.", value = "Es gibt eine Fehlermeldung.", 
     label = structure("Es gibt eine Fehlermeldung.", html = TRUE, class = c("html", 
     "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-"tutorial_quiz_answer")), structure(list(id = "lnr_ans_bf869f6", 
+"tutorial_quiz_answer")), structure(list(id = "lnr_ans_f753762", 
     option = "FALSE", value = "FALSE", label = structure("FALSE", html = TRUE, class = c("html", 
     "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-"tutorial_quiz_answer")), structure(list(id = "lnr_ans_da8c1d2", 
+"tutorial_quiz_answer")), structure(list(id = "lnr_ans_19240fb", 
     option = "TRUE", value = "TRUE", label = structure("TRUE", html = TRUE, class = c("html", 
     "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-"tutorial_quiz_answer")), structure(list(id = "lnr_ans_71ed93a", 
+"tutorial_quiz_answer")), structure(list(id = "lnr_ans_27f90bb", 
     option = "Es gibt einen fehlenden Wert aus.", value = "Es gibt einen fehlenden Wert aus.", 
     label = structure("Es gibt einen fehlenden Wert aus.", html = TRUE, class = c("html", 
     "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
@@ -5192,7 +5385,7 @@ <h2>R Chunk (freies Üben)</h2>
 "character")), incorrect = structure("Leider falsch!", html = TRUE, class = c("html", 
 "character")), message = NULL, post_message = NULL), ids = list(
     answer = "quiz-na-2-answer", question = "quiz-na-2"), loading = NULL, 
-    random_answer_order = TRUE, allow_retry = TRUE, seed = 1905475989.11269, 
+    random_answer_order = TRUE, allow_retry = TRUE, seed = 474768702.278919, 
     options = list()), class = c("learnr_radio", "tutorial_question"
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diff --git a/inst/tutorials/Grundlagen/css/style.css b/inst/tutorials/Grundlagen/css/style.css
index 976ed21..ece2439 100644
--- a/inst/tutorials/Grundlagen/css/style.css
+++ b/inst/tutorials/Grundlagen/css/style.css
@@ -584,4 +584,11 @@ h2.tutorialTitle,
   margin-bottom: 1em;
 }
 
+/*-------Cookie banner stuff ------*/
+.modal-open .modal {
+  display: flex !important;
+}
 
+.modal-open {
+  overflow: unset !important;
+}