diff --git a/docs/index.html b/docs/index.html
index 4f617eb..bd7aa4c 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -77,6 +77,10 @@ <h1>Puffer Validator Ticket (VT) Price History</h1>
               <li>If your actual APR is higher, you've made a profit.</li>
             </ul>
             <p>Note: This calculation assumes a full year of staking and doesn't account for compound interest and node operation fee.</p>
+
+            <div style="display: flex; justify-content: center;">
+                <button type="button" popovertarget="apr-popover" popovertargetaction="hide">close</button>
+            </div>
         </dialog>
 
     <script type="module">