Nested Style Rule Parse Error

[CresentCity]

The CSS Validator is treating a nested style rule as a parse error. Below is the link to the W3C CSS Nesting Module:

  https://www.w3.org/TR/css-nesting-1/

Here is the style rule from the CSS Nesting Module that the CSS Validator rejected:

.foo { color: red;

.bar { color: blue; } }

[rgant]

I'm seeing the same. Would be great if this could work.

[Mardeg]

Additionally the Nesting & selector is also producing a parse error.

Same issue as https://github.com/validator/validator/issues/1634