Can you explain the functionality of this CSS rule: ~"-moz-calc(..)"?

As I was reviewing some CSS code, I came across a rule that appeared like this:

width: ~"-moz-calc(100% - 10px)";

While I am familiar with -moz-calc, I am puzzled by why this is enclosed in a string and what exactly is the purpose of the '~' symbol?

Answer №1

Indeed, it is LESS, a type of CSS preprocessor.

Using the ~"" syntax allows you to create a explicit value without interpreting its contents as LESS code.
Otherwise, it would interpret -moz-calc() as a LESS function.

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