Tag

#html

Tagged “html”

7 articles

Safari Technology Preview 249 drops attr(), if(), @function, popover=hint and Temporal in one build

WebKit's July 29 preview stacks nine CSS additions, a new HTML popover value, the dialog closedby attribute, and the JavaScript Temporal object into a single release — one of the feature-densest STP drops of the year for hand-authored HTML and CSS.

Jul 30, 2026 · Dex Halloran Accessibility & semantics

A primary-nav flyout built on `popover`, not `aria-expanded`

Adrian Roselli has rebuilt his 2019 disclosure-widget primary nav on the native HTML `popover` attribute. The rebuild is a clean map of what the platform now carries for you, and where you still need ARIA.

Jul 9, 2026 · Marcus Osei Accessibility & semantics

Chrome 150 hands composite-widget arrow keys to the browser

Chrome 150 ships the `focusgroup` HTML attribute, a way to get roving arrow-key focus inside composite widgets like listbox, tablist and toolbar without a line of JavaScript. Adrian Roselli has published script-free demos, and the spec story is still an Open-UI explainer.

Jul 6, 2026 · Marcus Osei Browser releases

Safari Technology Preview 247 lands calc-mix() and clears a scatter of small fixes

WebKit's July 1 preview build adds CSS calc-mix() under its New Features list, plus HTML spec-alignment repairs for align="center" and rel=preload as="json", two VoiceOver-facing accessibility fixes, and a MathML change for underover layout.

Jul 2, 2026 · Yuki Tanaka Accessibility & semantics

`headingoffset` is not the outline algorithm coming back

Firefox has shipped `headingoffset` behind a flag. It quietly fixes a real pain point for reusable components, but it is not, and cannot be, the long-abandoned Document Outline Algorithm in disguise.

Jun 22, 2026 · Marcus Osei Accessibility & semantics

Customizable `<select>` is still a `<select>`: keep the text

WebKit's golden rule for the new customizable `<select>` is the rule we should have been following all along: every option needs real text, even when icons or swatches do the visual work.

Jun 20, 2026 · Marcus Osei Browser releases

Safari 27 beta opens up the form control, scroll, and the cascade

WebKit has detailed the Safari 27 beta: 58 new web-platform features and 525 fixes, including customizable <select>, scroll anchoring, the :heading pseudo-class, and the revert-rule and stretch CSS keywords.

Jun 19, 2026 · Yuki Tanaka