Update app.py

app.py

@@ -21,11 +21,11 @@ PROMPT = """
 5. 日本語で100語以内で説明してください。
 """
 html_code = """
-<script type="text/javascript">
-window.onload = function() {
-var height = document.getElementsByTagName("html")[0].scrollHeight;
-window.parent.postMessage(["setHeight", height], "https://arigatoai.com/agent/daily-reminder.html");
-}
+<script>
+window.addEventListener('message', (_ev) => {
+  const elmIframe = document.querySelector('#parentframe');
+  elmIframe.style.height = _ev.data + 'px';
+});
 </script>
 """