diff --git a/adventskalender/2025/index.html b/adventskalender/2025/index.html
index 6f5fc1a..052334c 100644
--- a/adventskalender/2025/index.html
+++ b/adventskalender/2025/index.html
@@ -17,6 +17,13 @@
 
     <div class="kalenderbild">
   <img src="assets/picture/Basisbild.png" alt="Bratonien Adventskalender 2025">
+  <div class="grid-overlay">
+  <!-- 24 Dummy-Türchen -->
+  <div class="day" style="top: 10%; left: 15%; width: 8%; height: 10%;"><span>1</span></div>
+  <div class="day" style="top: 25%; left: 40%; width: 8%; height: 10%;"><span>2</span></div>
+  <div class="day" style="top: 40%; left: 60%; width: 8%; height: 10%;"><span>3</span></div>
+  <!-- ... bis 24 -->
+</div>
 </div>
 
   </main>