CSS typed arithmetic, available starting in Chrome 140, allows division of typed values to produce unitless numbers, enabling conversion between different CSS data types. This feature opens new possibilities for creating dynamic relationships between properties, such as calculating element positions based on screen width, determining opacity from font size, or creating responsive animations without media queries or JavaScript. The capability transforms CSS from static declarations into computational relationships between properties.
Table of contents
The TypesThe Rules of Typed ArithmeticIs that all?!The Importance of the Divisor’s UnitFrom Length to AngleFrom Length to OpacityDynamic Width ColorsAn Extreme Example: Chaining ConversionsWrapping Up: The Dawn of Computational CSSSort: