Thanks for sharing it! I'm not an expert, but this could use some basic accessibility enhancement. Keyboard navigation doesn't seem to be well supported in your Simple Menu component. When I click to open the Simple Menu, I can't tab around inside the opened menu. When a modal is opened, I can still tab around the rest of the UI (focus should be trapped within it). I highly recommend reading through https://www.w3.org/TR/wai-aria-practices-1.1/. It's an incredibly useful document and is a good starting point.