using DashBootstrapComponents

button_group = dbc_buttongroup(
    [
        dbc_button("First"),
        dbc_button("Second"),
        dbc_dropdownmenu(
            [dbc_dropdownmenuitem("Item 1"), dbc_dropdownmenuitem("Item 2")],
            label = "Dropdown",
            group = true,
        ),
    ],
    vertical = true,
);
