pub type SpreadShadow = Todo;Expand description
https://drafts.csswg.org/css-borders-4/#typedef-spread-shadow
<spread-shadow> = <'box-shadow-color'>? && [ <'box-shadow-offset'> [ <'box-shadow-blur'> <'box-shadow-spread'>? ]? ] && <'box-shadow-position'>?Aliased Type§
pub enum SpreadShadow {
Todo,
}