Future CSS: State Container Queries - Ahmad Shadeed
An early look at CSS state queries.
https://ishadeed.com/article/css-state-queries/

Next Gen CSS: @container | CSS-Tricks
Chrome is experimenting with @container, a property within the CSS Working Group Containment Level 3 spec being championed by Miriam Suzanne of Oddbird, and a group of engineers across the web platform. @container brings us the ability to style elements based on the size of their parent container.
https://css-tricks.com/next-gen-css-container/?utm_source=tldrnewsletter
CSS Container Queries - CSS: Cascading Style Sheets | MDN
Note This document is an explanation of an early stage specification that is attracting a lot of interest from web developers. The examples and syntax below should be seen as an explainer to an evolving specification, in order to encourage experimentation and feedback.
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Container_Queries


Seonglae Cho