CSS-Trickz! also ready to join Digital Ocean

Video: OpaqueRange API.

This issue of What’s !important brings you clip-path jigsaws, a view transitions toolkit, name-only containers, the usual roundup of new, notable web platform features, and more.

Behind every technology, there should be a guide for its use. While JavaScript modules make it easier to write “big” programs, if there are no principles or systems for using them, things could easily become difficult to maintain.

One of the best-known examples of CSS state management is the checkbox hack. What if we want a component to be in one of three, four, or seven modes? That is where the Radio State Machine comes in.

Craving for a view transition? Sunkanmi has lots of common transitions you can drop into your website right now!

Chrome 147 becomes the first to implement the CSSPseudoElement JavaScript interface, and allow the startViewTransition() method to be called on […]

Chrome 147 becomes the first to ship border-shape as well as the scroll range for view timelines.

A clever approach for selecting multiple dates on a calendar where the :nth-child()‘s “n of selector” syntax does all the heavy lifting… even in the JavaScript.

Chrome 147 ships contrast-color() (the Color Level 5 version that only resolves to black or white), making it baseline.

Cascade layers, specificity tricks, smarter ordering, and even some clever selector hacks can often replace !important with something cleaner, more predictable, and far less embarrassing to explain to your future self.

Quiz: CSS or BS?

Chrome 145 introduces the column-height and column-wrap properties, enabling us to wrap the additional content into a new row below, creating a vertical scroll instead of a horizontal scroll.