Not sure why this was closed without someone giving a reason for closing it. Also, there is no answer? Looking for the same thing.
You can use dev tools to inspect how they have structured their elements. But in short I have made quick scribble with 123 section.
Editor on 123 page 
https://preview.webflow.com/preview/magic-land-of-design?preview=1eb54eaf554f2dad777e5073677ef6d6
Live preview:
http://magic-land-of-design.webflow.io/123
Assuming this is what you are after. Hope it helps
Thanks for showing me but unable to copy it. I tried to reproduce your layout and failed. Somehow spacing is not correct for HR line.