title: How to remove the rounded corners from JavaFX buttons
body: <p>I've noticed that buttons in JavaFX have rounded corners, which means when you have a grid of them there are little white spaces visible between.</p>
  
  <p><a href="https://i.stack.imgur.com/77TEc.png" rel="noreferrer">This illustrates the problem</a></p>
  
  <p>I'd like to make my buttons appear as rectangles, with right angled corners, is this possible? I assume this might be possible with CSS, but I can't find this question being asked before.</p>
  
  <p>Thanks.</p>