How to increase the backround space around text

I’m helping out my dad with his website https://www.jheversonconsulting.com/, and we’ve encountered a problem that transcends my skills. On the home page, how can we increase the size of the dark blue area so that all the headers (for example, “1. Consultant for truckers, insurance companies and lawyers”) fit inside it?

(Unfortunately he’s using a third-party theme that the designer no longer supports).

Thanks for any help you can provide!

The page I need help with: [log in to see the link]