diff --git a/uebung10/quiz.html b/uebung10/quiz.html
index d615996..3d45d8b 100644
--- a/uebung10/quiz.html
+++ b/uebung10/quiz.html
@@ -25,21 +25,21 @@
 <div id="screen1">
         Anzahl fragen:
         <input type="number" id="n" min="1" max="20" value="10">
-        <button id="get-questions" onclick="listener()">Spiel starten!</button>
+        <button id="get-questions" onclick="listener()" class="button">Spiel starten!</button>
 </div>
 
 <div id="screen2">
 
 <div id="question">Frage</div>
-        <button id="answer0">Antwort1</button>
-        <button id="answer1">Antwort2</button>
-        <button id="answer2">Antwort3</button>
+        <button id="answer0" class="button">Antwort1</button>
+        <button id="answer1" class="button">Antwort2</button>
+        <button id="answer2" class="button">Antwort3</button>
 </div>
 </div>
 
 <div id="screen3">
         Du hast <span id="right"></span> von <span id="total"></span> Fragen richtig
-        <button id="newgame" onclick="newGame()">Neues Spiel starten</button>
+        <button id="newgame" onclick="newGame()" class="button">Neues Spiel starten</button>
 </div>
 
 <script>