Beautify with css calc and var doesn't work

I’ve been the beautifier work perfectly in most places, however I’ve narrowed it down to this.

home {width: calc(var(--home_width) + 5px);}

it seems it doesn’t like var variable in conjuration with a calc.

apparently it considers this as invalid css, which is a problem for me, cause it doesn’t let me fix the formatting. I wouldn’t posted this to a GitHub or something, but I don’t know what beautifier you use or if it’s in house written.

It won’t work if --home_width is set to a number like 55, because you’re asking to add 55 (not a valid width) to 5px

Try setting --home_width to a valid width like 55px