Surround the 'Challenge description' phrase with an html tag

Problem/Motivation

Hello, i am trying to use some css code to 'Challenge description' phrase but is very difficult because of the lack of a surrounding html tag.

Proposed resolution

Is it possible to use a html tag, e.g. <div>, with a predefined class, e.g. challenge-description, to surround the 'Challenge description' phrase?

Thank you.