Button corners not being displayed

[Enrico Covili]

Hi, I'm using PyQt5 for the first time and I'm having a problem displaying button borders.
Those buttons are not flat, so borders should be visualized (i think?)
Here's an image of the result:

Here's the code which I'm using:
https://github.com/ginop-1/msp_app/blob/main/msp_app/ui/generated/main_window_ui.py

[Yunosuke Ohsugi]

Hi @ginop-1.
Sorry for the late reply. There seems to be a problem with your code.
The line MainWindow.setStyleSheet("border: 10px solid transparent;") remove border of all widgets.