Change width and height of output div

app.py

@@ -24,7 +24,8 @@ st.markdown(
     """
     <style>
     .scrollable-div { 
-        max-height: 400px; 
+        height: 400px; 
+        width: 100%;
         overflow-y: auto; 
         padding: 10px; 
         border: 1px solid #ccc;