css/css-variables/css-vars-custom-property-case-sensitive-001.html

<!DOCTYPE html>
<html>
<head>
    <title>CSS Variables Test: custom property names are case-sensitive</title>
    <meta charset="UTF-8">
    <link rel="author" title="Noah Collins" href="mailto:noahcollins@gmail.com">
    <link rel="help" href="http://www.w3.org/TR/css-variables-1/#using-variables">
    <meta name="assert" content="Custom property names are case-sensitive">
    <link rel="match" href="/css/reference/ref-filled-green-100px-square.xht">
    <style type="text/css">
        :root {
            --lowercasegreen: green;
            --MixedCaseGreen: green;

            --lowercasered: red;
            --MixedCaseRed: red;
        }
        div {
            width: 100px;
            height: 25px;
        }
    </style>
</head>
<body>
    <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
    <div style="background-color: var(--lowercasegreen, red);"></div>
    <div style="background-color: var(--MixedCaseGreen, red);"></div>
    <div style="background-color: var(--LowerCaseRed, green);"></div>
    <div style="background-color: var(--mixedcasered, green);"></div>
</body>
</html>