Can i improve the Interface design?

Hello! i’ve started using the PiMusicBox and i love it.
I’m a designer starting with the Raspberry Pi and want to edit the web client.

I’ve noticed that the web interface has some usability issues that can be fixed easily.
I believe it can be a big change, but don’t know where to find the editable interface files (html,css).
Where do i find them? do i need to edit the source files and then compile a new version?

Thanks!

The project lives at https://github.com/pimusicbox/mopidy-musicbox-webclient

You can setup a development by following the tutorial at https://docs.mopidy.com/en/latest/devenv/