CSS Container Queries are selector queries that allow you to base a subset of styles on an arbitrary parent selector rather than the viewport.
CSS Container Queries, like media queries, are selector queries. Container queries, however, allow you to base a subset of styles on an arbitrary parent selector rather than the viewport.
- W3C Specification: https://www.w3.org/TR/css-contain-3/
- MDN documentation: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Container_Queries