title: JavaFX - Removing the black line under the tabs in a tab pane
body: <p>I have a black line under my tab pane. The line is always there and goes from the most left pixel of the first tab a few pixels to the right of the last tab.</p>
  
  <p>I've tried so many CSS selectors now and went through all of the listed selectors in the JavaFX 8 Oracle documentation and I have no idea what causes the black line to be there. I've not seen it ony the many other examples regarding the tab pane here.</p>
  
  <p>It is always there, even when I remove all of my prior styling.</p>
  
  <p><a href="https://i.stack.imgur.com/7QcsG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7QcsG.png" alt="enter image description here"></a></p>
  
  <p>How can I remove it?</p>