Update app.py

app.py

@@ -141,7 +141,7 @@ modal_and_cart_js = """
             modal.style.top = `${event.touches ? event.touches[0].screenY : event.clientY}px`;
         } else {
             modal.style.width = '30%';
-            modal.style.top = ${event.clientY}px; // Use mouse Y position for laptop
+              modal.style.top = `${event.clientY}px`;// Use mouse Y position for laptop
         }
         modal.style.left = '50%';
         modal.style.transform = 'translate(-50%, -50%)';