How to add a line break in the Hero header text on my source landing page?

I want to format the text in the Hero header of my Ghost landing page, Source, with a line break. The text should appear like this:

Thoughts need time and space.
Time to emerge - space to grow.

Is there a way to achieve this?

Thanks in advance!

Do you have access to the template code?
Can you change the template?

thanks Joe
thought there is an easy way I missed

You can use Shift + Enter to add line break to title and description in header card. I think you are looking for that.

Edit: Ah you say header text in landing page, which set in theme settings. Unfortunately currently adding line-breaks are not possible on those fields