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select

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The prefix selector, a hyphen followed by an asterisk, set between two oversized curly braces.
Webmedium signal

A class prefix selector is now spec text in Selectors Level 5

The draft of August 18 adds section 2.1, Class Prefix Selectors, defining .foo-* to match any class beginning with that prefix. It replaces the attribute-selector workarounds every design system carries. Nothing implements it yet, and the matching rule has an edge that will catch people: .foo-* does not match foo--bar.

CSS Working Groupverified

web.dev title card reading "New to the web platform in July", with a hot-air balloon on the left.
Webmedium signal

New on the web platform in July: Firefox 153 and Chrome 151

Rachel Andrew summarizes July's stable releases. Firefox 153 widens how the select element is parsed so that any nested element is allowed inside it, which opens the path to genuinely customizable dropdowns without JavaScript replacements. The same release brings the Picture-in-Picture API to desktop, the Intl.Locale Info API with getCalendars(), getTimeZones(), and getWeekInfo(), and IndexedDB getAllRecords(). Chrome 151 adds the CSS ruby-overhang property, manual slot assignment in declarative Shadow DOM through the shadowrootslotassignment attribute, and the animation property on the AnimationEvent and TransitionEvent interfaces.

web.devverified