Update app.py

app.py

@@ -144,7 +144,7 @@ modal_and_cart_js = """
               modal.style.top = `${event.clientY}px`;// Use mouse Y position for laptop
         }
         modal.style.left = '50%';
-        modal.style.transform = 'translate(-50%, -50%)';
+        modal.style.transform = 'translate(-50%, 0)';
         document.getElementById('modal-image').src = image;
         document.getElementById('modal-name').innerText = name;
         document.getElementById('modal-description').innerText = description;