title: Remove header border of a DataGrid
body: <p>How can I remove the grey line which is visible between the <code>Header</code> and the <code>Row</code> of a <code>DataGrid</code>.</p>
  
  <p><a href="https://i.stack.imgur.com/FQl5A.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FQl5A.png" alt="Border"></a></p>