I want to learn how to upgrade standard widgets in Pyqt5. It seems that the redesign is done using setStyleSheet, but I did not find a complete list of commands. On the Qt website are just examples. First I decided to do it like in the picture: 
First snag: how to make text inside QlineEdit. So that when pressed it was like this: 
Further, as you can see, the bezel changes when pressed. It is also not clear how to set it up. I would be grateful for any information)
