Note from 29 May 2024

How should I read the values for box-shadow-position in the formal syntax of box-shadow on MDN?

It says <box-shadow-position> = [ outset | inset ] which I read as: the value is either outset or inset. But I know outset is not supported. It is the default behavior, not the default value.

Maybe I need a documentation of these formal syntaxes… 😅