Unverified50% confidenceFactExact time
calc() is a CSS math function that allows addition, subtraction, multiplication, and division operations when declaring property values and can mix different units (e.g., calc(100% - 20px)).
1
Sources
50%
Confidence
Long-term
Relevance
8/12/2026
First Seen
Sources
CSS自定义属性实战：用calc()替代JS计算样式
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