We can’t just call everything after CSS3 “CSS4” because it’s just… too much. Flexbox ain’t exactly new. So we’ll put that and stuff of it’s era into a “CSS4” bucket, and then put a lot of the newer stuff into a “CSS5” bucket, and anything newer than that into a “Future/Next” bucket until it gets sectioned off.

Can we emulate the upcoming CSS contrast-color() function via CSS features that have already widely shipped? And if so, what are the tradeoffs involved and how to best balance them?

Preethi Sam walks through an example that demonstrates where custom properties are more suitable than variables while showcasing the greater freedom and flexibility that custom properties provide for designing complex, refined animations.

There’s a lot of chatter about CSS masonry at the moment. Should it be called “masonry” and should it be grid? Let’s worry about the basics first.

Juan Diego Rodriguez explains why media queries still occupy a vital role in responsive layouts; only they are now one tool in a larger toolbox with modern techniques that are best when used together.