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|Updated Candidate Recommendation published by W3C for Values and Units|
CSS Values and Units Module Level 3 [w3.org] (Candidate Recommendation, July 30)
|This CSS3 module describes the common values and units that CSS properties accept and the syntax used for describing them in CSS property definitions. |
Especially of note are these:
Font-relative lengths: the 'em', 'ex', 'ch', 'rem' units
Viewport-percentage lengths: the 'vw', 'vh', 'vmin', 'vmax' units
Familiar 'cm', 'mm', 'in', 'pt', 'pc', 'px' units
Mathematical Expressions: 'calc()'
Toggling Between Values: 'toggle()'
Attribute References: 'attr()'
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