diff --git a/client/package.json b/client/package.json
index 8cc8e949..8d703d42 100644
--- a/client/package.json
+++ b/client/package.json
@@ -12,6 +12,7 @@
     "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore"
   },
   "dependencies": {
+    "@headlessui/vue": "^1.6.4",
     "axios": "^0.26.1",
     "d3": "^7.4.4",
     "loglevel": "^1.8.0",
diff --git a/client/src/components/MainNavigationBar.vue b/client/src/components/MainNavigationBar.vue
index 3e06df82..9e73317d 100644
--- a/client/src/components/MainNavigationBar.vue
+++ b/client/src/components/MainNavigationBar.vue
@@ -74,7 +74,10 @@ function calcNavigationMobileOpenClasses() {
         <hr class="text-white lg:hidden">
         <li class="hidden lg:list-item flex-auto"></li>
         <li class="text-white hover:text-sky-500 text-2xl font-bold lg:text-base lg:font-normal">Mediathek</li>
-        <li class="text-white hover:text-sky-500 text-2xl font-bold lg:text-base lg:font-normal">Netzwerk</li>
+        <li class="text-white hover:text-sky-500 text-2xl font-bold lg:text-base lg:font-normal flex flex-row items-center">
+          <it-icon-message class="w-8 h-8 mr-2 lg:w-6 lg:h-6 lg:mr-1"/>
+          Netzwerk
+        </li>
         <li class="text-white hover:text-sky-500 text-2xl font-bold lg:text-base lg:font-normal">Jan Baumgartner</li>
       </ul>
     </nav>
diff --git a/client/src/views/StyelGuideView.vue b/client/src/views/StyelGuideView.vue
index 44ccd7ed..e964dca8 100644
--- a/client/src/views/StyelGuideView.vue
+++ b/client/src/views/StyelGuideView.vue
@@ -1,14 +1,32 @@
 <script setup lang="ts">
 
+import {ref} from 'vue'
+import {Listbox, ListboxButton, ListboxOption, ListboxOptions} from '@headlessui/vue'
 import MainNavigationBar from '@/components/MainNavigationBar.vue';
 
 const colors = ['blue', 'sky', 'orange', 'green', 'red', 'gray',];
-const colorValues = [100, 300, 500, 700, 900,];
+const colorValues = [100, 200, 300, 400, 500, 600, 700, 800, 900,];
 
 function colorBgClass(color: string, value: number) {
   return `bg-${color}-${value}`;
 }
 
+
+const people = [
+  {id: 1, name: 'Wade Cooper'},
+  {id: 2, name: 'Arlene Mccoy'},
+  {id: 3, name: 'Devon Webb'},
+  {id: 4, name: 'Tom Cook'},
+  {id: 5, name: 'Tanya Fox'},
+  {id: 6, name: 'Hellen Schmidt'},
+  {id: 7, name: 'Caroline Schultz'},
+  {id: 8, name: 'Mason Heaney'},
+  {id: 9, name: 'Claudie Smitham'},
+  {id: 10, name: 'Emil Schaefer'},
+]
+
+const selected = ref(people[3])
+
 </script>
 
 <template>
@@ -25,110 +43,110 @@ function colorBgClass(color: string, value: number) {
       &lt;it-icon-message/&gt; </p>
 
     <div class="mt-8 mb-8 flex flex-col gap-4 flex-wrap lg:flex-row">
-      <div>
+      <div class="inline-flex flex-col">
         message
-        <it-icon-message/>
+        <it-icon-message class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         arrow-up
-        <it-icon-arrow-up/>
+        <it-icon-arrow-up class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         arrow-down
-        <it-icon-arrow-down/>
+        <it-icon-arrow-down class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         arrow-left
-        <it-icon-arrow-left/>
+        <it-icon-arrow-left class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         arrow-right
-        <it-icon-arrow-right/>
+        <it-icon-arrow-right class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         close
-        <it-icon-close/>
+        <it-icon-close class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         check
-        <it-icon-check/>
+        <it-icon-check class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         info
-        <it-icon-info/>
+        <it-icon-info class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         checkbox-checked
-        <it-icon-checkbox-checked/>
+        <it-icon-checkbox-checked class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         checkbox-unchecked
-        <it-icon-checkbox-unchecked/>
+        <it-icon-checkbox-unchecked class="w-8 h-8" />
       </div>
 
 
     </div>
 
     <div class="mt-8 mb-8 flex flex-col gap-4 flex-wrap lg:flex-row">
-      <div>
+      <div class="inline-flex flex-col">
         ls-apply
-        <it-icon-ls-apply/>
+        <it-icon-ls-apply class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         ls-watch
-        <it-icon-ls-watch/>
+        <it-icon-ls-watch class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         ls-test
-        <it-icon-ls-test/>
+        <it-icon-ls-test class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         ls-practice
-        <it-icon-ls-practice/>
+        <it-icon-ls-practice class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         ls-network
-        <it-icon-ls-network/>
+        <it-icon-ls-network class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         ls-start
-        <it-icon-ls-start/>
+        <it-icon-ls-start class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         ls-end
-        <it-icon-ls-end/>
+        <it-icon-ls-end class="w-8 h-8" />
       </div>
     </div>
 
     <div class="mt-8 mb-8 flex flex-col gap-4 flex-wrap lg:flex-row">
-      <div>
+      <div class="inline-flex flex-col">
         smiley-happy
-        <it-icon-smiley-happy/>
+        <it-icon-smiley-happy class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         smiley-thinking
-        <it-icon-smiley-thinking/>
+        <it-icon-smiley-thinking class="w-8 h-8" />
       </div>
 
-      <div>
+      <div class="inline-flex flex-col">
         smiley-neutral
-        <it-icon-smiley-neutral/>
+        <it-icon-smiley-neutral class="w-8 h-8" />
       </div>
     </div>
 
@@ -137,7 +155,7 @@ function colorBgClass(color: string, value: number) {
     </div>
     <table class="text-gray-700">
       <tr class="h-12 md:h-18 lg:h-24">
-      <td></td>
+        <td></td>
         <td class="text-center" v-for="value in colorValues">{{value}}</td>
       </tr>
       <tr v-for="color in colors" class="h-12 md:h-18 lg:h-24">
@@ -177,6 +195,63 @@ function colorBgClass(color: string, value: number) {
       <button class="btn-secondary">Secondary</button>
       <button class="btn-blue">Blue</button>
     </div>
+
+    <div class="flex flex-col gap-4 flex-wrap lg:flex-row lg:w-128 content-center lg:justify-start mb-16">
+
+
+      <button type="button"
+              class="btn-primary inline-flex items-center p-3 rounded-full">
+        <it-icon-message class="h-5 w-5"></it-icon-message>
+      </button>
+
+      <button type="button"
+              class="btn-primary inline-flex items-center px-3 py-2">
+        <it-icon-message class="-ml-1 mr-3 h-5 w-5"></it-icon-message>
+        Button text
+      </button>
+
+      <button type="button"
+              class="btn-primary inline-flex items-center px-3 py-2">
+        Button text
+        <it-icon-message class="ml-3 -mr-1 h-5 w-5"></it-icon-message>
+      </button>
+    </div>
+
+    <h2 class="mt-8 mb-8">Dropdown (Work-in-progress)</h2>
+
+    <Listbox as="div" v-model="selected">
+      <div class="mt-1 relative w-128">
+        <ListboxButton
+          class="bg-white relative w-full border border-gray-500 pl-5 pr-10 py-3 text-left cursor-default font-bold">
+          <span class="block truncate">{{ selected.name }}</span>
+          <span class="absolute inset-y-0 right-0 flex items-center pr-2 pointer-events-none">
+          <it-icon-arrow-down class="h-5 w-5" aria-hidden="true"/>
+        </span>
+        </ListboxButton>
+
+        <transition leave-active-class="transition ease-in duration-100" leave-from-class="opacity-100"
+                    leave-to-class="opacity-0">
+          <ListboxOptions
+            class="absolute z-10 mt-1 w-full bg-white shadow-lg max-h-60 py-1 text-base ring-1 ring-gray-900 ring-opacity-5 overflow-auto focus:outline-none sm:text-sm">
+            <ListboxOption as="template" v-for="person in people" :key="person.id" :value="person"
+                           v-slot="{ active, selected }">
+              <li
+                :class="[active ? 'text-white bg-blue-900' : 'text-gray-900', 'cursor-default select-none relative py-2 pl-3 pr-9']">
+              <span :class="[selected ? 'font-semibold' : 'font-normal', 'block truncate']">
+                {{ person.name }}
+              </span>
+
+                <span v-if="selected"
+                      :class="[active ? 'text-white' : 'text-blue-900', 'absolute inset-y-0 right-0 flex items-center pr-4']">
+                <it-icon-check class="h-5 w-5" aria-hidden="true"/>
+              </span>
+              </li>
+            </ListboxOption>
+          </ListboxOptions>
+        </transition>
+      </div>
+    </Listbox>
+
   </main>
 </template>
 
diff --git a/server/vbv_lernwelt/static/icons/icon-arrow-down.svg b/server/vbv_lernwelt/static/icons/icon-arrow-down.svg
index b79cfb02..ab374eca 100644
--- a/server/vbv_lernwelt/static/icons/icon-arrow-down.svg
+++ b/server/vbv_lernwelt/static/icons/icon-arrow-down.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
     <path
             d="M14.9187 20L6.15699 11.0386C5.94112 10.7984 5.94874 10.4269 6.17427 10.1962C6.3998 9.96556 6.76303 9.95776 6.99783 10.1786L14.9187 18.28L22.8397 10.1786C22.9902 10.0246 23.2097 9.96442 23.4154 10.0208C23.621 10.0772 23.7817 10.2415 23.8368 10.4518C23.8919 10.6622 23.8331 10.8866 23.6825 11.0406L14.9187 20Z"
     />
diff --git a/server/vbv_lernwelt/static/icons/icon-arrow-left.svg b/server/vbv_lernwelt/static/icons/icon-arrow-left.svg
index aa30f555..3ba04ada 100644
--- a/server/vbv_lernwelt/static/icons/icon-arrow-left.svg
+++ b/server/vbv_lernwelt/static/icons/icon-arrow-left.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
     <path
             d="M9.92857 14.9902L18.89 6.22846C19.1302 6.01259 19.5017 6.02021 19.7323 6.24574C19.963 6.47127 19.9708 6.83451 19.75 7.0693L11.6486 14.9902L19.75 22.9111C19.904 23.0617 19.9642 23.2812 19.9078 23.4868C19.8514 23.6925 19.6871 23.8532 19.4767 23.9083C19.2664 23.9634 19.0419 23.9046 18.8879 23.754L9.92857 14.9902Z"
     />
diff --git a/server/vbv_lernwelt/static/icons/icon-arrow-right.svg b/server/vbv_lernwelt/static/icons/icon-arrow-right.svg
index e196eb10..00ee16e3 100644
--- a/server/vbv_lernwelt/static/icons/icon-arrow-right.svg
+++ b/server/vbv_lernwelt/static/icons/icon-arrow-right.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
     <path
             d="M19.9285 15.0098L10.9671 23.7715C10.7269 23.9874 10.3554 23.9798 10.1248 23.7543C9.89408 23.5287 9.88629 23.1655 10.1071 22.9307L18.2085 15.0098L10.1071 7.08886C9.95309 6.9383 9.89295 6.71884 9.94931 6.51317C10.0057 6.3075 10.17 6.14684 10.3804 6.09174C10.5907 6.03662 10.8152 6.09543 10.9692 6.24599L19.9285 15.0098Z"
     />
diff --git a/server/vbv_lernwelt/static/icons/icon-arrow-up.svg b/server/vbv_lernwelt/static/icons/icon-arrow-up.svg
index e15ead5e..0a373e71 100644
--- a/server/vbv_lernwelt/static/icons/icon-arrow-up.svg
+++ b/server/vbv_lernwelt/static/icons/icon-arrow-up.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
     <path
             d="M14.9383 10L23.7001 18.9614C23.916 19.2016 23.9084 19.5731 23.6828 19.8038C23.4573 20.0344 23.0941 20.0422 22.8593 19.8214L14.9383 11.72L7.01742 19.8214C6.86685 19.9754 6.6474 20.0356 6.44173 19.9792C6.23605 19.9228 6.0754 19.7585 6.02029 19.5482C5.96518 19.3378 6.02398 19.1134 6.17455 18.9594L14.9383 10Z"
     />
diff --git a/server/vbv_lernwelt/static/icons/icon-check.svg b/server/vbv_lernwelt/static/icons/icon-check.svg
index 7e0c879a..f06255f5 100644
--- a/server/vbv_lernwelt/static/icons/icon-check.svg
+++ b/server/vbv_lernwelt/static/icons/icon-check.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
     <path
             d="M12.1529 18.7528L8.30897 14.9088L7 16.2086L12.1529 21.3615L23.2147 10.2998L21.9149 9L12.1529 18.7528Z"
     />
diff --git a/server/vbv_lernwelt/static/icons/icon-checkbox-checked.svg b/server/vbv_lernwelt/static/icons/icon-checkbox-checked.svg
index 33cfb292..d97477c2 100644
--- a/server/vbv_lernwelt/static/icons/icon-checkbox-checked.svg
+++ b/server/vbv_lernwelt/static/icons/icon-checkbox-checked.svg
@@ -1,5 +1,5 @@
-<svg width="30" height="30" fill="none" xmlns="http://www.w3.org/2000/svg">
-<rect x="1" y="1" width="28" height="28" rx="1" stroke="#00224D" stroke-width="2"/>
-<path d="M12.1529 18.7528L8.30897 14.9088L7 16.2086L12.1529 21.3615L23.2147 10.2998L21.9149 9L12.1529 18.7528Z"
-      fill="#00224D"/>
+<svg viewBox="0 0 30 30" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <rect x="1" y="1" width="28" height="28" rx="1" stroke="#00224D" stroke-width="2"/>
+    <path d="M12.1529 18.7528L8.30897 14.9088L7 16.2086L12.1529 21.3615L23.2147 10.2998L21.9149 9L12.1529 18.7528Z"
+          fill="#00224D"/>
 </svg>
diff --git a/server/vbv_lernwelt/static/icons/icon-checkbox-unchecked.svg b/server/vbv_lernwelt/static/icons/icon-checkbox-unchecked.svg
index 0bba9abd..c75cd0f6 100644
--- a/server/vbv_lernwelt/static/icons/icon-checkbox-unchecked.svg
+++ b/server/vbv_lernwelt/static/icons/icon-checkbox-unchecked.svg
@@ -1,3 +1,6 @@
-<svg width="30" height="30" fill="none" xmlns="http://www.w3.org/2000/svg">
-    <rect x="1" y="1" width="28" height="28" rx="1" stroke="#B1C1CA" stroke-width="2"/>
+<svg viewBox="0 0 30 30" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="30" height="30" fill="#EDF2F6"/>
+<rect x="1" y="1" width="28" height="28" rx="1" stroke="#00224D" stroke-width="2"/>
+<path d="M12.1529 18.7528L8.30897 14.9088L7 16.2086L12.1529 21.3615L23.2147 10.2998L21.9149 9L12.1529 18.7528Z"
+      fill="#00224D"/>
 </svg>
diff --git a/server/vbv_lernwelt/static/icons/icon-close.svg b/server/vbv_lernwelt/static/icons/icon-close.svg
index c072a928..66e7a261 100644
--- a/server/vbv_lernwelt/static/icons/icon-close.svg
+++ b/server/vbv_lernwelt/static/icons/icon-close.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
     <path
             d="M16.473 15.3L26.457 5.31901C26.6885 5.11428 26.7873 4.79797 26.7135 4.49786C26.6396 4.19776 26.4053 3.96344 26.1052 3.88957C25.8051 3.8157 25.4887 3.91448 25.284 4.14601L15.3 14.127L5.31901 4.14301C5.11428 3.91148 4.79797 3.8127 4.49786 3.88657C4.19776 3.96044 3.96344 4.19476 3.88957 4.49486C3.8157 4.79497 3.91448 5.11128 4.14601 5.31601L14.127 15.3L4.14301 25.281C3.91148 25.4857 3.8127 25.8021 3.88657 26.1022C3.96044 26.4023 4.19476 26.6366 4.49486 26.7105C4.79497 26.7843 5.11128 26.6855 5.31601 26.454L15.3 16.473L25.281 26.457C25.61 26.7479 26.1086 26.7326 26.4191 26.4221C26.7296 26.1116 26.7449 25.613 26.454 25.284L16.473 15.3Z"
     />
diff --git a/server/vbv_lernwelt/static/icons/icon-info.svg b/server/vbv_lernwelt/static/icons/icon-info.svg
index 8ba2ab69..f9defcae 100644
--- a/server/vbv_lernwelt/static/icons/icon-info.svg
+++ b/server/vbv_lernwelt/static/icons/icon-info.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
     <path fill-rule="evenodd" clip-rule="evenodd"
           d="M15 5C9.48 5 5 9.48 5 15C5 20.52 9.48 25 15 25C20.52 25 25 20.52 25 15C25 9.48 20.52 5 15 5ZM14 10V12H16V10H14ZM14 14V20H16V14H14ZM7 15C7 19.41 10.59 23 15 23C19.41 23 23 19.41 23 15C23 10.59 19.41 7 15 7C10.59 7 7 10.59 7 15Z"
     />
diff --git a/server/vbv_lernwelt/static/icons/icon-ls-apply.svg b/server/vbv_lernwelt/static/icons/icon-ls-apply.svg
index 92c46fa7..0748334c 100644
--- a/server/vbv_lernwelt/static/icons/icon-ls-apply.svg
+++ b/server/vbv_lernwelt/static/icons/icon-ls-apply.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
     <path
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index beadedef..f4f02153 100644
--- a/server/vbv_lernwelt/static/icons/icon-ls-end.svg
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@@ -1,4 +1,4 @@
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index a6ac8c43..6f53b3bf 100644
--- a/server/vbv_lernwelt/static/icons/icon-ls-network.svg
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@@ -1,4 +1,4 @@
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index 6d8047a0..e316dcd3 100644
--- a/server/vbv_lernwelt/static/icons/icon-ls-practice.svg
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@@ -1,4 +1,4 @@
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index 5685b16e..f57084da 100644
--- a/server/vbv_lernwelt/static/icons/icon-ls-start.svg
+++ b/server/vbv_lernwelt/static/icons/icon-ls-start.svg
@@ -1,4 +1,4 @@
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diff --git a/server/vbv_lernwelt/static/icons/icon-ls-test.svg b/server/vbv_lernwelt/static/icons/icon-ls-test.svg
index ce6bab4c..47ee7de9 100644
--- a/server/vbv_lernwelt/static/icons/icon-ls-test.svg
+++ b/server/vbv_lernwelt/static/icons/icon-ls-test.svg
@@ -1,4 +1,4 @@
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diff --git a/server/vbv_lernwelt/static/icons/icon-ls-watch.svg b/server/vbv_lernwelt/static/icons/icon-ls-watch.svg
index 05e9fe71..b2ce9c88 100644
--- a/server/vbv_lernwelt/static/icons/icon-ls-watch.svg
+++ b/server/vbv_lernwelt/static/icons/icon-ls-watch.svg
@@ -1,4 +1,4 @@
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diff --git a/server/vbv_lernwelt/static/icons/icon-message.svg b/server/vbv_lernwelt/static/icons/icon-message.svg
index a9fe526d..3bcbe525 100644
--- a/server/vbv_lernwelt/static/icons/icon-message.svg
+++ b/server/vbv_lernwelt/static/icons/icon-message.svg
@@ -1,4 +1,4 @@
-<svg width="30" height="30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
+<svg viewBox="0 0 30 30" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
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diff --git a/server/vbv_lernwelt/static/icons/icon-smiley-happy.svg b/server/vbv_lernwelt/static/icons/icon-smiley-happy.svg
index ca5e69f1..70c4066a 100644
--- a/server/vbv_lernwelt/static/icons/icon-smiley-happy.svg
+++ b/server/vbv_lernwelt/static/icons/icon-smiley-happy.svg
@@ -1,12 +1,9 @@
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+      fill="#0A0A0A"/>
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diff --git a/server/vbv_lernwelt/static/icons/icon-smiley-neutral.svg b/server/vbv_lernwelt/static/icons/icon-smiley-neutral.svg
index ecefdd30..0d08522d 100644
--- a/server/vbv_lernwelt/static/icons/icon-smiley-neutral.svg
+++ b/server/vbv_lernwelt/static/icons/icon-smiley-neutral.svg
@@ -1,11 +1,9 @@
-<svg width="32" height="32" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
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+<svg viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
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+      fill="#B1C1CA" stroke="#B1C1CA"/>
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+      fill="#B1C1CA"/>
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diff --git a/server/vbv_lernwelt/static/icons/icon-smiley-thinking.svg b/server/vbv_lernwelt/static/icons/icon-smiley-thinking.svg
index 8b314ade..2974e1c5 100644
--- a/server/vbv_lernwelt/static/icons/icon-smiley-thinking.svg
+++ b/server/vbv_lernwelt/static/icons/icon-smiley-thinking.svg
@@ -1,18 +1,13 @@
-<svg width="32" height="32" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
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diff --git a/tailwind.config.js b/tailwind.config.js
index 1390574f..e5693826 100644
--- a/tailwind.config.js
+++ b/tailwind.config.js
@@ -48,7 +48,7 @@ module.exports = {
     }
   },
   safelist: [{
-    pattern: /bg-(blue|sky|orange|green|red)-(500)/,
+    pattern: /bg-(blue|sky|orange|green|red)-(400|500|600|700)/,
   }, {
     pattern: /bg-gray-(100|300|500|700|900)/,
   },