Tab Item and Tab Control Border Style

Question

How do I style the Tab Control Border so that the selected Tab Item does not have a line underneath it?

Answer 1

In the past I've accomplished this by making the TabItem extend a little further down then it's allocated, so its actually drawn on top of the border element and hides it

I can't remember how I did it exactly, but I think it was with a negative margin on the bottom of the TabItem