XF 2.1 How do you use CSS calc in extra.less?

[mark22]

I put this very basic CSS line into extra.less
left: calc(5% + 33px);

But xenforo outputs it as
left:38%


Is there anyway to tell xenoforo to output my CSS and let the browser do the calculation?

 

[mark22]

Found the answer here:

Not a bug - CSS calc() function not working properly

In XF, something like: width: calc(100% - 10px); results in: width: calc(90%); Tested on Firefox and Chrome. That is to say, the "px" value is parsed as "%" when performing the calculation.

xenforo.com

have to do ~""