<!DOCTYPE html><!-- webkit-test-runner [ UseSystemAppearance=true ] -->
<html>
<head>
<title>This tests that vibrancy can be used without an explicitly specified backing material.</title>
<style>

div {
    background: linear-gradient(90deg, red, blue) fixed;
}

p {
    -apple-visual-effect: -apple-system-vibrancy-secondary-label;
}

</style>
</head>
<body>
<div><p>-apple-system-vibrancy-secondary-label</p></div>
</body>
</html>