title: QToolBar Border setStyleSheet()
body: <p>I have a number of QToolBar's in Qt::TopToolBarArea of my QMainWindow. I want to remove the left and right borders from the ones which are not on the edges. However, when  try the following code, it ends up erasing ALL of the borders on the QToolBar:</p>
  
  <p>toolBar2->setStyleSheet("QToolBar { border-left-style: none; border-right-style: none; }");</p>
  
  <p>I want this to appear as one continuous tool bar, with no borders between them. What is the proper way to achieve this?</p>