Syntax

• <calc()> = calc( <calc-sum> )
• <calc-sum> = <calc-product> [ [ '+' | '-' ] <calc-product> ]*
• <calc-product> = <calc-value> [ '*' <calc-value> | '/' <number> ]*
• <calc-value> = <number> | <dimension> | <percentage> | ( <calc-sum> )

Remarks

For calc(), white space is required around the “\\-” and “\\+” operators, but not the “\\*” or “/” operators.

All units must be of the same type; trying to multiply a height by a time duration, for example, is invalid.