Press flag. Mobile friendly! Click on a house banner (should be fairly obvious, but anyway from left to right, NOT in order of importance: Gryffindor, Slytherin, Ravenclaw, Hufflepuff) to find out about the house, click anywhere to exit. Computers only: if you hover your mouse over a banner, the animal moves.
Ummmmmmmmmmm. I dunno? I've seen loads of Hogwarts Houses projects (this is the best one I've seen: https://scratch.mit.edu/projects/394239001 , please go check it out! Also give @IM_A_PROUD_pureblood a follow!)