Update app2.py

app2.py

@@ -185,16 +185,25 @@ filter_list = pn.widgets.MultiChoice(
 # Layout using Template
 template = pn.template.FastListTemplate(
     title="EasySciRead",
-    header=[pn.Row(header_buttons, width=750, sizing_mode='stretch_width'), pn.Row(filter_list, width=250), pn.Row(add_to_header_button, width=55)],
-    main= main_body_instance.update,
+    header=[
+        pn.Row(
+            header_buttons, width=750, sizing_mode='stretch_width'
+        ), 
+        pn.Row(filter_list, width=250), 
+        pn.Row(add_to_header_button, width=55)
+    ],
+    main=main_body_instance.update,
     sidebar=[buttons],
     accent_base_color="#88d8b0",
     header_background="#FFFFFF",
     header_color="#000000",
     text_align='center',
-    sidebar_width=150,
-    sizing_mode = 'stretch_both'
+    sidebar_width=160,
+    sizing_mode='stretch_both'
 )
 
+# Update the header to populate the header buttons initially
+update_header()
+
 # Run the app
 template.servable()