As always, but especially with stairs, figuring them out on a more malleable and fault tolerant medium saves a considerable amount of time. It helps get all the little details right too.
It will move with the ground frosts, and so it attached to the deck in a way that will allow for this.
This is the first door inside the house, and it’s going to the kid who started needing privacy. He still leaves it open at night because he’s not used to being isolated, he’s still just a little boy. We had to explain a few things about door use that are not obvious when you didn’t grow up with them. Being careful with where Esther’s fingers are when he closes it, or how not to close the cat in. He of course slammed it once, and I told him just as I had constructed the door, I would deconstruct it if he did that again. The threat was deemed plausible and it’s been honestly hilarious to see him ever so gently yet angrily close his door when he throws a pre-teen fit.