Сreate one rule for all windows

[Ved-un]

Hello.
Can you tell me how to create one rule for all windows?

What should I put in window_class: ?

    window_rules: [
        (window_class: "", spawn_floating: true),
    ],

[Eskaan]

window_class should be a regex, so I think window_class: ".*" should work.

[Ved-un]

Thanks