local floating_rule = {
    id = "floating",
    rule_any = {
        instance = { "copyq", "pinentry" },
        class = {
            "Arandr",
            "Blueman-manager",
            "Gpick",
            "Kruler",
            "Sxiv",
            "Tor Browser",
            "Wpa_gui",
            "veromix",
            "xtightvncviewer",
        },
        name = {
            "Event Tester", -- xev.
        },
        role = {
            "AlarmWindow", -- Thunderbird's calendar.
            "ConfigManager", -- Thunderbird's about:config.
            "pop-up", -- e.g. Google Chrome's (detached) Developer Tools.
        },
    },
    properties = { floating = true },
}

return floating_rule