can I make a custom function in css file just like calc() (ik calc is there by default)??

Question

I want to make a custom function of pxtoem in css.So that I can simply write width: pxtoem(250) and it will be automatically converted to em ........(just like calc works in css)

Answer 1

no, you cannot: css is not a programing language, even if some rare built-in function are available in certain circumstances...

however, convert px to em is not as obvious as you could think, because px are fixed units, while em are relative units: that means you need to refresh value each time element get another text size value (imagine now that element have a text-size value defined as relative too) ^^

Answer 2

You can use something like sass
https://sass-lang.com/

Answer 3

visph Jamal thanks