wpt/css/css-conditional/css-supports-025.xht at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>CSS Test: A nested @supports rule with valid syntax and a passing condition must apply rules inside it</title>
  <link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au" />
  <link rel="help" href="http://www.w3.org/TR/css3-conditional/#at-supports" />
  <meta name="assert" content="An inner @supports rule inside an outer @supports must apply its child rules only if both @supports conditions succeeded."/>
  <link rel="match" href="support/pass.xht" />
  <style type="text/css"><![CDATA[
    @supports (color: green) {
      @supports (color: blue) {
        html { background-color: green }
      }
    }
  ]]></style>
 </head>
 <body>
 </body>
</html>