WebGui VS DearPyGui

you could compile this with imgui to the web: https://github.com/jnmaloney/WebGui

but you'd have to write communication to your django app. I would do that in JS and then pass events to the WASM layer.

You mean like this?

My next app will be C++/Qt compiled to Javascript with Emscripten and then run inside Electron.

(Incidentally, someone made a Dear Imgui demo this way: https://jnmaloney.github.io/WebGui/imgui.html, minus involving Electron, of course.)

For native GUI, DearPyGui[0] as modern as you can.

For browser web-based GUI, you can use nicegui[1]

[0] -- https://github.com/hoffstadt/DearPyGui

[1] -- https://github.com/zauberzeug/nicegui

If it's just to align text in the centre or to the right of a box, you could use a button and, by using theming, hide the fact that it's a button. https://github.com/hoffstadt/DearPyGui/issues/1111

Personally, i like PyQt or PySide they have basically everything you need to make a proper app or even simple apps, but there is another DearPyGui this is basically python version of imgui the c++ library, it provides some good customization options and can be used for simple or complex projects too, their discord is also very helpful.

There are some examples in the showcase as well. https://github.com/hoffstadt/DearPyGui/wiki/Dear-PyGui-Showcase

I'm a big fan of DearPyGUI

Use a button and set width of the button equal to the width of the window. Using theming to set the button text alignment to center. A comparable solution, for aligning to the right, can be found here. https://github.com/hoffstadt/DearPyGui/issues/1111

I was using PyQt5/PySide which will give you a nice native look but I eventually shifted over to DearPyGui for most of my smaller utilities. Its just faster for me. You will get more options and freedom with PyQt/PySide though and can use QT Designer to design your interfaces pretty easily.