Distance between categories on x-axis

Something like width=300 does the trick.

# Figure layout
fig.update_layout(template='simple_white', width=300, height=500, title='Main Title', yaxis_title='Distance moved',
                  legend=dict(title='', itemclick='toggle', itemsizing='constant', traceorder='normal',
                  bgcolor='rgba(0,0,0,0)', x=1),
                  xaxis=dict(title='This is a title', showticklabels=True, ticks='outside')
                 )

newplot-12