diff --git a/src/index.css b/src/index.css
index 585b5f29bc863b06f24201d14b6485de3349a4f1..55715a7b77f72fa6b64c2c4af8bd74bbd584afdb 100644
--- a/src/index.css
+++ b/src/index.css
@@ -4,6 +4,10 @@
     font-size: 30px;
     text-align: center;
     max-width: 50%;
+
+    gap: 5px;
+
+    margin-bottom: 5px;
 }
   
 .flex-item {
@@ -14,23 +18,24 @@
 
     flex: 50%;
 
-    border: 2px solid #fff;
+    border: 2px solid #555555;
     text-decoration: none;
+
+    transition: background-color 0.4s ease, border-color 0.4s ease, color 0.4s ease;
 }
 
 .flex-item--warning {
     background-color: #000;
+    border-color: #000;
 }
 
 .flex-item.flex-item--warning:hover {
     background-color: #fff;
-    border-color: #000;
     color: #000;
 }
 
 .flex-item:hover {
     background-color: #fff;
-    border-color: #555555;
     color: #555555;
 }
 
diff --git a/src/index.php b/src/index.php
index 29d620f2d6ce1be69f42b8343ab5fdb851488490..d94c11b25a54dbb82d2a0382fc81b33727a809fb 100644
--- a/src/index.php
+++ b/src/index.php
@@ -12,7 +12,7 @@ $Exam="";
 $ExamInfo="";
 if (is_dir("Exam")) {
     $ExamInfo="<li><strong>Use the folder Exam (located in src/Exam) for your solution of the examination. Do not use any other folder!</strong></li>";
-    $Exam = "<a class=\"flex-item flex-item--warning\" href=\"./Exam\">Exam</a>";
+    $Exam = "<a class=\"flex-item flex-item--warning\" href=\"./Exam\">Klausur</a>";
 }
 
 echo <<<HTML
@@ -40,13 +40,14 @@ echo <<<HTML
     <h2>Navigation</h2>
     <div class="flex-container">
         <a href="./Demos" class="flex-item">Demos</a>
-        <a href="./Klausuren" class="flex-item">Klausuren</a>
+        <a href="./Klausuren" class="flex-item">Altklausuren</a>
     </div>
     <div class="flex-container">
         $Prak
-        <a href="./Playground" class="flex-item">Playground</a>
+        <a href="./Playground" class="flex-item">Spielwiese</a>
     </div>
     <div class="flex-container">
+        <a href="./Exam_Probe" class="flex-item">Probeklausur</a>
         $Exam
     </div>
 </main>