That section is built with the old
grid system with some custom CSS which I don’t really recommend.
I would say that if you are somewhat comfortable with coding, then use browser inspect to check the HTML and the CSS associated with it:
If you aren’t comfortable with coding at all, then look into a page builder option like Elementor might not be a bad idea.
I should also mention that David just recently built a site with similar style using Elementor called Liberte which you can check it out here:
Let me know if this helps 🙂