Special Style for TabItem in WPF [closed]

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Can anyone help me with style on WPF. I am trying to make something like on screenshot. I don`t understand how to make borders of TabItemHeader and TabItemContent like that.

Updated:

I have make something like that: http://hostingkartinok.com/show-image.php?id=2fd7604dd85877a6d7fa625de9439d7a But the last problem is Border of content. How to set thickness of it?

Answer 1

<Border BorderThickness="2" />