Trying to make HTML 2D something or other, can't figure out how to make 2D objects

it would be very helpfur, as i was thinking of testing out tons of ideas to bring my mitzventures series to life. or even, just testing out a web browser survival game.
i have so many ideas to make right now, but i at least need to make basic items…
i believe i can fig out how to do physics and such by myself.