Hi there,
The table is wrapped inside ‘summary’ div which floats right and if we want to make table full width the whole container has to be full width. Regretfully this isn’t a feature offered by X. It could be possible with custom development, but this would be outside the scope of support we can offer. You may wish to consult a developer to assist you with this. X is quite extensible with child themes, so there are plenty of possibilities.
Thanks for understanding. Take care!