Changing a Default Setting

I need some guidance to a simple matter and I hope someone can help.

I use the Avenue theme on this dual-language site: https://www.e-toko.co.uk

Underneath the slider images there are 5 lines of text. I’d like to stretch the text over a wider column so it appears in either two or three lines – rather than the rather cramped five lines that are currently on show.

In layman’s terms, how does one go about this?

Help is much appreciated.