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Test Info:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Cascade: @import with basic supports condition</title>
<link rel="match" href="reference/ref-filled-green-100px-square.xht">
<meta name="assert" content="Test passes on visual UAs if @import can be combined with a supports condition.">
<style>
@import "support/test-red.css";
@import "support/test-green.css"
supports(display: block);
@import "support/test-red.css"
supports(foo: bar);
div {
box-sizing: border-box;
width: 100px;
height: 100px;
padding: 5px; /* Avoids text antialiasing issues */
background: red;
}
</style>
</head>
<body>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="test"></div>
</body>
</html>