title: Tkinter: Remove active button highlight
body: <p>How can I remove the dotted black border after a button is clicked in Tkinter (with Ttkthemes)?
  <a href="https://i.stack.imgur.com/Hzfbo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Hzfbo.png" alt="enter image description here" /></a></p>
  <p>I'm on Windows 10, Python 3.7.9.</p>
  <p>There seems to be no uniform way to remove it and I searched across Google and SO with no luck. Thanks.
  Here's a minimal example:</p>
  <pre><code>import tkinter
  import tkinter.ttk
  from ttkthemes import ThemedTk
  
  tk = ThemedTk(theme=&quot;arc&quot;)
  tk.configure(background=&quot;#f5f6f7&quot;)
  tk.resizable(0,0)
  
  selectFileInput = tkinter.ttk.Button(
      tk,
      text=&quot;Select Input File&quot;
  )
  selectFileInput.place(x=20,y=60)
  tk.mainloop()
  </code></pre>