To understand the steep ramp or stairs, assume the following:
- Everything is made of boxes
- Since all the boxes are parallel to eachoter and you are facing them straight on - we use one point perspective
As for the stairs themselves: try imagining that the stairs are in a box, you would see the box in front of you as a rectangle. Next, if you were to carve the stairs out of the box, it would be like placing many wide, short boxes, one on top of the other, pushing each one a little further back
Cheers!