<title>CSS Test (Conditional Rules): Support for simple passing conditions in @media</title>

<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">

<link rel="help" href="https://www.w3.org/TR/css-conditional-3/#use">

<link rel="help" href="https://www.w3.org/TR/css-conditional-3/#at-media">

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

<meta name="assert"

content="Test passes if rules under a true @media condition are applied in place.">

<style>

div {

background: red;

height: 25px;

width: 100px;

}

@media all {

.test1 { background: green; }

.test2 { background: red; }

}

.test2 { background: green; }

@media not unknown {

.test3 { background: green; }

.test4 { background: red; }

}

.test4 { background: green; }

</style>

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

<div class="test1"></div>

<div class="test2"></div>

<div class="test3"></div>

<div class="test4"></div>

</html>