named-feature()The named-feature() function, when used with @supports, checks if a named CSS behavior is supported. The CSS behavior names are defined by specification. For example, @supports named-feature(anchor-position-follows-transforms) checks whether anchor-positioning applies after transforms."cssCSSlimitedhttps://drafts.csswg.org/css-conditional-5/#typedef-supports-named-feature-fnhttps://developer.mozilla.org/docs/Web/CSS/@supportscss.at-rules.supports.named-featurehttps://nowyoucanuse.com/features--supports-named-feature.html