Ask HN: Website design builder

The website trend nowadays seems to be multiple horizontal sections, starting with a large photo as a header and continuing with various sections like "Who we are", "3 easy steps", "Pricing" etc. The only example I can think of is https://www.pagerduty.com, but basically pretty much every website that's presentation-focused looks like this.

I am absolutely convinced that I saw a tool on HN (one of the "Show HN"s) that would allow you to easily create such a website/template. You could interactively add rows and, for each one, you could specify what type its content should be: 3 icons, 2 icons, two tabs, whatever. It looked pretty neat and I could really use it right now. I think I spotted it around 1-2 months ago.

Can anyone remember what that was, please?