title: _tkinter.TclError: unknown option "-background"
body: <p>When I write this,</p>
  <pre><code>x = Button(reglesfr, text=&quot;x&quot;, background = &quot;white&quot;,foreground=&quot;red&quot;,command=menu)
  </code></pre>
  <p>I have this error:</p>
  <pre><code>  File &quot;c:\Users\ilyas\Documents\defind\menu.py&quot;, line 200, in &lt;module&gt;
      x = Button(reglesfr, text=&quot;x&quot;, background = &quot;white&quot;,foreground=&quot;red&quot;,command=menu)
    File &quot;C:\Users\ilyas\AppData\Local\Programs\Python\Python39\lib\tkinter\ttk.py&quot;, line 607, in __init__
      Widget.__init__(self, master, &quot;ttk::button&quot;, kw)
    File &quot;C:\Users\ilyas\AppData\Local\Programs\Python\Python39\lib\tkinter\ttk.py&quot;, line 552, in __init__
      tkinter.Widget.__init__(self, master, widgetname, kw=kw)
    File &quot;C:\Users\ilyas\AppData\Local\Programs\Python\Python39\lib\tkinter\__init__.py&quot;, line 2572, in __init__
      self.tk.call(
  _tkinter.TclError: unknown option &quot;-background&quot;```
  
  </code></pre>