text: # main.py - main class, initializes everything
  
  from PyQt5.QtWidgets import QMainWindow, QPushButton, QBoxLayout, QLabel, QApplication
  from PyQt5.QtGui import QIcon
  import sys, os
  from main.card import Card
  
  class Main(QMainWindow):
  
      def __init__(self):
          super().__init__()
  
          self.widget = Card() # make instance of Card() class to enable use
          self.setCentralWidget(self.widget) # set the class widget from another class
          self.setGeometry(50, 50, 320, 300)
          self.setWindowTitle("Oblique Strategies")
          self.setWindowIcon(QIcon(os.path.join('resources', 'logo.png')))
  
  if __name__ == "__main__":
      app = QApplication(sys.argv)
      instance = Main()
      instance.show()
      sys.exit(app.exec_())