CSS: Parse Error. html :where([style * =border-top-color])

[jasonmader]

Inline css, such as,

<style id='wp-block-library-inline-css'>
    html :where([style * =border-top-color]) {
        border-top-style:solid
    }
</style>

ends up with a space between * and = that wasn't there in the file wp-includes/css/dist/block-library/style.css but is an error on the w3c validator.

[desrosj]

My apologies that this took so long to receive a response, @jasonmader.

Could you give this another check on a site running the latest version of WordPress? I've checked a few sites that I have and a fresh test site and I'm unable to reproduce it.

[jasonmader]

I just checked the current release of 6.6 and no longer have the space between * and = either.