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,