How do I duplicate a heading section across all pages?

I’m just getting started with Squarespace, trying to move my existing website into a Squarespace template. On the Squarespace template I’m using (AlignFlow), one page (Fees, Ts & Cs on my website; Training on the AlignFlow template) has a heading section that I like, and I would like that type of heading on all of my pages, but I can’t work out what type of section it is, or how to duplicate it across other pages.

When I click on “Add Section” I get a list that has Intros at the top, but “Headline” or “Header” doesn’t appear on the list. The section I like is basically just an image with a headline overlaid, and I could just make one up myself, but I’d like all the sizes etc to match across all the pages.

Is there any way to duplicate this element or alternatively, to find out how it was built?