Update templates/index.html

templates/index.html

@@ -13,9 +13,9 @@
             <p id="card-text"><strong>English:</strong> {{ english }}</p>
         </div>
         <div class="navigation">
-            <button id="prevBtn" class="nav-button">Previous</button>
-            <button id="flipBtn" class="flip-button">Flip</button>
-            <button id="nextBtn" class="nav-button">Next</button>
+            <button id="prevBtn">Previous</button>
+            <button id="flipBtn">Flip</button>
+            <button id="nextBtn">Next</button>
         </div>
     </div>
     <script>