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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>valid width and negative height in meta viewport</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<meta name="viewport" content="width=400, height=-200">
<script src="viewport_helpers.js"></script>
</head>
<body>
<p>width=400, height=-200</p>
<script type="application/javascript">
"use strict";
add_task(async function valid_width_and_negative_height() {
await SpecialPowers.pushPrefEnv(scaleRatio(1.0));
let info = getViewportInfo(800, 480);
is(info.width, 400, "width should be 400");
is(info.height, 240, "height should be 240 which is the result of the " +
"display height * viewport width / display width");
});
</script>
</body>
</html>
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