shrink box to fit data within it

Is there a way to shrink a box or text box?

We have a text box containing address data fields (add1, add2, add3, town & postcode) and when any of those lines are blank they are suppressed, displaying fewer lines. However, the border doesn't adjust to fit.  Unfortunately, we've been tasked with reproducing some legacy reports so have no flexibility with the design - it has to have a border around it.

I can't see a Shrink option - is there a way to do it programmatically or somehow anchor the border to the last line of data?

Thanks

EDIT: since I can't delete the thread entirely, please ignore. We've come up with an alternative solution. Thanks