A look at CSS features from the future: media query ranges, container queries and @when/@else.
Color the browser scrollbar (Edge, Safari, Chrome & Firefox) with a mix of
-webkitand standardized CSS properties.
The CSS Color Module Level 4 spec made rgba() and hsla() legacy CSS color functions. They're now aliases for rgb() and hsl().
CSS custom properties don't work in media queries. Custom media queries could help out here but unfortunately, they're not supported yet.
Media queries can have a boolean context even though they allow more than two values.