Update public/index.html

public/index.html

@@ -431,7 +431,7 @@ body {
       
         <!-- themen zu addieren juni 25-->
               <!-- Themenbuttons -->
-                <div class="topic-buttons"  >
+                <div class="topic-buttons"  data-aos="fade-up" data-aos-delay="50">
                   <button onclick="toggleTopic('ethik', this)">Ethik</button>
                   <button onclick="toggleTopic('technik', this)">Technik</button>
                   <button onclick="toggleTopic('kompetenz', this)">Kompetenz</button>