I would like to align widgets inside two HBoxes horizontally.

import ipywidgets as widgets

but1 = widgets.RadioButtons(options=["foo", "bar"])
but2 = widgets.RadioButtons(options=["verylongstringherethisislong", "bar"])

check1 = widgets.Checkbox(description="asdf")
check2 = widgets.Checkbox(description="verylongstringherethisislong")

box_layout = widgets.Layout(
    align_items='flex-start',
    width='1300px',  
    justify_content='flex-start'  
)

widgets.VBox(
    children=[
        widgets.HBox(children=[but1, but1, but2, but2], layout=box_layout),
        widgets.HBox([check2, check2, check1, check1], layout=box_layout)
    ]
)

My current code doesn’t do the job: