Dropdown expand to fill parent

How can I have the dcc.Dropdown expand to fill its cell like all the dbc.TextInput do?

I have tried using fluid class names in the table cells, dropdown element, and input group element. All to no success. Am I missing something? Any help or advice would be greatly appreciated :slight_smile:

Here is the table cell with the dropdown:

    html.Td(
        children=dbc.InputGroup(
            children=[
                dbc.InputGroupAddon("Port", addon_type="prepend"),
                dcc.Dropdown(options=serial_ports()),
            ],
        ),
    ),