Hello, I am trying to get my game to play on the browser here but I have it by 9:16 ratio to match cell phones. This is causing my game to be too big and wants the user to scroll up and down the page to see the whole game.

Sorry to ask if this is a common question, but what resolution pixel-wise should I do so it's playable here? I need to maintain something close to the 9:16 ratio.