boxsizer

What is wrong with this code? I am trying to place a notebook on a panel that is being controlled by a boxsizer. I am new to wxpython and can't figure out what I am doing wrong. When I run it it just makes a mess in the corner :( import wx class TestNoteBook(wx.Frame): def __init__(self, parent, id, title): wx.Frame.__init__(self, parent, id, title, size=(600, 500)) panel = wx.Panel(self) hsizer = wx.BoxSizer(wx.HORIZONTAL) leftpanel = wx.Panel(panel) notebook = wx.Notebook(leftpanel) posterpage = wx.Panel(notebook) listpage = wx.Panel(notebook) notebook.AddPage(posterpage, 'posters') notebook

I'm migrating my Bootstrap themes from v2.3.2 to v3.0.0 and one thing I noticed is that a lot of dimensions are calculated differently, due to the following styles in bootstrap.css. *, *:before, *:after { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; } Can anyone explain why Bootstrap switches the box-sizing of all elements to border-box? I suspect it has to do with the new grid system being percent-based, but the selector above does not only apply to the grid elements obviously. Seems a bit radical imho :-) Anyone care to give some insight? Bass Jobsen