<head>

<title>CSS Test (Conditional Rules): non-matching @media within @supports should not apply</title>

<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">

<link rel="author" href="http://opera.com" title="Opera Software ASA">

<link rel="help" href="http://www.w3.org/TR/css3-conditional/#at-supports">

<link rel="match" href="at-supports-001-ref.html">

<style>

div {

background-color:red;

height:100px;

width:100px;

}

@supports (margin:0) { div { background-color:green; } }

@supports (margin: 0) {

@media not all {

div { background-color:red; }

}

}

</style>

</head>

<body>

<p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>

<div></div>

</body>