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What’s !important #15: Boundary-aware CSS, Time-based CSS, Full-bleed CSS, and More
Jul 15, 2026
Read all about boundary-aware CSS, accessible grid lanes, time-based web designs, full-bleed, the customizable select, and new web platform features.
newsArticles
Get Ready For the Powerful CSS border-shape Property!
Jul 7, 2026
We recently got the shape() function and corner-shape property. What else could we possibly need as far as making shapes in CSS? Let me tell you: the border-shape property!
border-shapeborders
Quick Hit #159
Jul 7, 2026
Firefox 154 (Nightly) will ship text-box, text-box-trim, and text-box-edge, making them Baseline.
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CSSfirefox
Quick Hit #158
Jul 6, 2026
Safari TP 247 becomes the first to trial calc-mix(), which returns a progress point between two values.
calccalc-mix()
Quick Hit #157
Jul 3, 2026
Chrome 150 becomes the first to ship animatable zoom, flex-wrap: balance, overscroll-behavior: chain (chaining with no overscroll), named-feature(), corner rounding for polygon(), and finally, the focusgroup attribute.
chromeCSS
Quick Hit #156
Jul 2, 2026
Chrome 150 implements comma-separated container queries as well as support for light-dark(), following Firefox support.
chromecontainer-queries
Quick Hit #155
Jul 1, 2026
Chrome 150 ships background-clip: border-area (supported by Safari already).
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background-clipchrome
Quick Hit #154
Jun 30, 2026
Chrome 150 implements the AccentColor/AccentColorText system-color keywords, making them Baseline.
chromecolors
What’s !important #14: Gap Decorations, random(), field-sizing, and More
Jun 30, 2026
I know you’re busy, so for What’s !important #14, I’ll be sprinting through what’s been a stacked couple of weeks despite few browser updates. From CSS Quake to CSS Gap Decorations, this isn’t one to miss!
newsArticles
What’s !important #14: Gap Decorations, random() Experiments, field-sizing for , and More
Jun 30, 2026
I know you’re busy, so for What’s !important #14, I’ll be sprinting through what’s been a stacked couple of weeks despite few browser updates. From CSS Quake to CSS Gap Decorations, this isn’t one to miss!
newsArticles
The Shifting Line Between CSS States and JavaScript Events
Jun 29, 2026
CSS has always had pseudo-classes that style things based on user interactions. Recent features, however, are blurring the line between what CSS "listens" for and how they are alternatives to what Javascript typically listens for.
pseudo elementsstate
Quick Hit #153
Jun 25, 2026
Firefox 154 (Nightly) ships progress(), advanced attr(), and a UI for and .
attr()CSS