Update app.py

app.py

@@ -81,7 +81,7 @@ document.addEventListener('DOMContentLoaded', function() {
     const observer = new MutationObserver(function(mutations) {
         for (let mutation of mutations) {
             if (mutation.addedNodes.length && mutation.addedNodes[0].classList.contains('alert')) {
-                window.scrollTo({top: window.scrollY});
+                window.scrollTo({top: 50%});
             }
         }
     });