CSS Gamepad API Visual Debugging With CSS Layers

When you plug in a controller, you mash buttons, move the sticks, pull the triggers… and as a developer, you see none of it. The browser’s picking it up, sure, but unless you’re logging numbers in the console, it’s invisible. That’s the headache with the Gamepad API.
It’s been around for years, and it’s actually pretty powerful. You can read buttons, sticks, triggers, the works. But most people don’t touch it. Why? Because there’s no feedbac