Is there a CSS media query to detect Windows?

Question

I want to specify two slightly different background colors, one for Mac OS, one for Windows.

Answer 1

Older versions of Firefox could also detect windows (for those who are not using autoupdate) and are using version 4 or newer. It is more basic and does not tell the version, just the fact you are in windows. I created this one for testing a while back because I was curious.

@media screen and (-moz-windows-theme) {
    body {
        background-color: white;
    }
}

this is also covered in https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Media_queries