How to write border-radius in less without dividing result

Question

How can I write this css into less:

border-radius: 10px / 20px;

normally css interpret something like :

border-bottom-left-radius: 10px 20px;
border-bottom-right-radius: 10px 20px;
border-top-left-radius: 10px 20px;
border-top-right-radius: 10px 20px;

but less compilers are dividing 10px/20px = 0.5px

Answer 1

This could be due to not having strict maths turned on in the compiler which tells it to only run maths within parenthesis.

An alternative is to trick the system into thinking its a normal string instead of a calculation.

border-radius: 10px ~"/" 20px;

Codepen Example

Answer 2

You can wrap the entire in ~"..." like

border-radius: ~"10px / 20px";

or you can use

border-radius: e("10px / 20px");

You can refer string unquoting