ric unitThe ric CSS length unit, or root international character, is a font-relative length equal to the width of CJK character relative to the root element.unitsUnitsnewly2026-01-13https://drafts.csswg.org/css-values-4/#font-relative-lengthshttps://developer.mozilla.org/docs/Web/CSS/Reference/Values/lengthcss.types.length.richttps://nowyoucanuse.com/features--ric.html