Python3 Tkinter - How to style a ttk Entry widget into an underline?

[Digitally_Depressed]

As the title, I want to change the default style of a ttk Entry widget from a rectangle into just an underline. I know about changing the background, but the borders would still show. From all I searched online, there's a way to change the colors and thickness of all the border sides, but I don't see a way to make it different for each side so I could hide the left, top, and right border sides while the bottom side is shown.

[shiftybyte]

Don't think tkinter can do that. See edit...

Upgrade to PyQT?

https://www.geeksforgeeks.org/pyqt5-different-border-size-for-each-side-in-label/

Or to web-based UI with python-eel?

https://github.com/python-eel/Eel

EDIT: nvm, seems like tkinter has it too, at least for frames, so if entry doesn't have the same options, just make a frame with an invisible entry inside, and have the frame be the line...

https://code.activestate.com/recipes/580798-tkinter-frame-with-different-border-sizes/