I want to shrink the background as the content in it gets shorter how can i do that

[muhammad.muneeb.ejaz]

you can see the background is pretty much wide for the content it contains how can i do that?

[muhammad.muneeb.ejaz]

thanks for replying.
but i am trying to reduce or enlarge the text content in a repeating group as it grows or shrinks as it should be according to the text.

as the text in the black background should grow as the text grow accordingly.