<!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: An @supports rule with balanced invalid syntax must evaluate to false</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="flags" content="" /> <meta name="assert" content="An @supports condition must successfully parse a parenthesized expression that has invalid syntax with balanced parentheses."/> <link rel="match" href="support/pass.xht" /> <style type="text/css"><![CDATA[ html { background-color: red } @supports not ({ something @with [ balanced ] parens }) { html { background-color: green } } ]]></style> </head> <body> </body> </html>