<!DOCTYPE html>
<html>
<head>
<title>Case Insensitive Attribute matching</title>
<style>
[link=foobar I], [lang=foobar I] {
    display: none;
}
</style>
</head>
<body>
    <p>On success, there should be no red anywhere.</p>
    <!-- None of these rects should appear, lang and link attribute matching is case insensitive for HTML documents. -->
    <div style="background-color: red; position: absolute; left:0; width:50px; height:50px"  lang="FooBar"></div>
    <div style="background-color: red; position: absolute; left:50px; width:50px; height:50px" link="FooBar"></div>
    <div style="background-color: red; position: absolute; left:100px; width:50px; height:50px" lang="foobar"></div>
    <div style="background-color: red; position: absolute; left:150px; width:50px; height:50px" link="foobar"></div>

    <svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 100 100" style="margin-top:50px">
        <!-- The first green rects should be visible, attribute matching is always case sensitive for XML or SVG documents. -->
        <rect x="50" y="0" width="50" height="50" lang="FooBar" style="fill:red" />
        <rect x="0" y="0" width="50" height="50" link="FooBar" style="fill:red" />
        <!-- These are regular match and should not appear. -->
        <rect x="0" y="50" width="50" height="50" lang="foobar" style="fill:red" />
        <rect x="50" y="50" width="50" height="50" link="foobar" style="fill:red" />
    </svg>
</body>
</html>