Unit division in CSS has been at the top of my CSS wishlist for years. Unit division allows us to compare and manipulate any type of unit with any other type of unit for the first time. This is huge. To my surprise and delight, Safari launched unit division in CSS this week.

The syntactical decision depends on how we conceive of this feature and its future. Is this an extension of CSS Grid, leveraging existing Grid properties? Or should it be treated as something completely different, with its own set of new properties and new default values? You’ll be able to code the same layouts either way. The functionality will be the same.

But the name is, I think, slightly misleading. It doesn't only work on text. It will work on any content. For example - I have a row of icons at the bottom of this page. If the viewport is too narrow, a single icon might drop to the next line. That can look a bit weird.

You’d be forgiven for thinking coding up both a dark and a light mode at once is a lot of work. It is, but I’m here to tell you it’s now a lot simpler with modern CSS!

If your favorite content management system feels like it’s sinking into a shallow well of hubris, you might want alternatives. I have a few ideas.