title: How to make border of QLabel look like border of other widgets like QTreeWidget?
body: <p>I noticed different border styles for QTreeWidget and QLabel - even if I try to adjust the stylesheet. Of course, I could change the stylesheet for both, but ideally I'd like to keep the QTreeWidget's border style. How can I make the border of QLabel look like the border of QTreeWidget?</p>
  
  <hr>
  
  <p><strong>MCVE snippet:</strong></p>
  
  <pre><code>import sys
  from PyQt5.QtWidgets import *
  
  class widget(QWidget):
      def __init__(self):
          super().__init__()
          treewidget = QTreeWidget(self)
          label = QLabel(self)
          label.setStyleSheet("background-color: white; border: 1px inset grey; min-height: 200px;")
          grid = QGridLayout()
          grid.setSpacing(10)
          grid.addWidget(treewidget, 1, 0)
          grid.addWidget(label, 2, 0)
          self.setLayout(grid)
          self.show()
  
  if __name__ == '__main__':
      app = QApplication(sys.argv)
      f = widget()
      sys.exit(app.exec_())
  </code></pre>
  
  <hr>
  
  <p><strong>Without stylesheet:</strong></p>
  
  <p><a href="https://i.stack.imgur.com/Dv67R.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Dv67R.png" alt="window default"></a></p>
  
  <hr>
  
  <p><strong>Screenshot of resulting window for MCVE snippet:</strong></p>
  
  <p><a href="https://i.stack.imgur.com/5lU7q.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5lU7q.png" alt="window as is"></a></p>
  
  <hr>
  
  <p><strong>What I want the window to look like:</strong></p>
  
  <p><a href="https://i.stack.imgur.com/AJhuT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AJhuT.png" alt="window as desired"></a></p>