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Less Compilation Issues with CSS calc() Properties: Prevention Methods
Less compilers, such as OrangeBits and dotless, have been known to incorrectly translate CSS calc() properties. This can lead to undesired results, such as converting "calc(100% - 250px - 1.5em)" to "calc(-151.5%)".
To prevent this, Less version 3.00 onwards no longer evaluates expressions within calc() by default. This change ensures that calc() values are preserved during compilation.
For Less versions prior to 3.00:
To prevent less from translating calc equations you can use tilde notation like so:
body { width: calc(~"100% - 250px - 1.5em"); }
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