Parallel Categories Tick Text Placement and Bar Size

I am attempting to modify the layout of a parallel categories plot to have wide ‘boxes’ with the tick text centered in them, in bold. I can see how to adjust tick font using fig.update_traces(tickfont=…). But I can’t seem to figure out how to move them from outside the boxes to inside them and widening the boxes to accomodate the text.

Any guidance is greatly appreciated.

Thank you,
Eric