This seems silly, but even this has benefits over online styles: it generates a scoped classname that wouldn't interfere with others, and you can use this synta

This seems silly, but even this has benefits over online styles: it generates a scoped classname that wouldn't interfere with others, and you can use this syntax with JS conditionals to dynamically apply CSS with values interpolated if you need. Not much different than injecting an object in a `style` attribute in practice, but there's a lot of creative firepower in the arbitrary styles API.