title: How to reduce the space occupied by an ipywidget checkbox below 100px?
body: <p>No matter what I do, it seems the smallest width of an <code>ipywidgets.Checkbox</code> is 100px. Anything smaller and the widget doesn't show. It seems a waste of space when grouping with other widgets in an <code>ipywidgets.HBox</code></p>
  
  <pre><code>import ipywidgets as ipyw
  ly = dict(margin='0px', border='solid', max_width='100px')
  w = ipyw.Checkbox(value=True, layout=ly)
  display(w)
  </code></pre>
  
  <p>Also the widget is right-justified by default. I didn't figure out how to change the justification.</p>
  
  <p>Has anyone come up with a way to decrease the occupying space?</p>