Vantage Headline : Custom CSS to form Line Breaks?

Hello,

I was wondering if there is a way to insert custom CSS to turn the H1 into two lines? Without being able to edit the html, I can’t figure out how to distinguish with CSS.

(and for the Headline to remain as the two lines, even when the window size is large, and not jsut collapsed into two lines as a result of media queries)

Thanks!