Container style queriesContainer style queries with the @container at-rule apply styles to an element based on the values of custom properties of its container.container-queriesContainer queriesnewly2026-05-19https://drafts.csswg.org/css-conditional-5/#style-containercss-container-queries-stylehttps://developer.mozilla.org/docs/Web/CSS/Reference/At-rules/@containercss.at-rules.container.style_queries_for_custom_propertieshttps://nowyoucanuse.com/features--container-style-queries.html