diff --git a/20_app_struct/browser/browser-demo.png b/20_app_struct/browser/browser-demo.png
new file mode 100644
index 0000000000000000000000000000000000000000..6c09edbc7b565aafe1307fb28d3b8a1d24e39fef
Binary files /dev/null and b/20_app_struct/browser/browser-demo.png differ
diff --git a/20_app_struct/browser/browser.py b/20_app_struct/browser/browser.py
index 294de0f0334921d878311027b8373a79bdd70614..c35078f4b721eeebe60e9b4193d954c22e402167 100644
--- a/20_app_struct/browser/browser.py
+++ b/20_app_struct/browser/browser.py
@@ -17,7 +17,7 @@ from wx.lib.buttons import GenBitmapTextButton
 class Example(wx.Frame):
 
     def __init__(self, *args, **kw):
-        super(Example, self).__init__(*args, **kw)
+        super(Example, self).__init__(*args, **kw,size=(600,400))
 
         self.InitUI()