basket.html

<!DOCTYPE HTML>
<html>
<head>
    <title>basket.js with CSS</title>
</head>
<body>
<script src="lib/create-stylesheet.unwrapped-0.2.1.js"></script>
<script src="lib/basket.full.min-0.0.3.js"></script>
<script>
    basket.require({ url: 'css/styles.css', execute: false }).then(function(responses) {
        // HACK: function parameters for the promise method don't appear to be documented, but they contain the responses for now.
        var css = responses[0];
        _stylesheet.appendStyleSheet(css, function(err, style) {
            if (err) {
                console.error(err);
            } else {
                console.log("Stylesheet successfully load via basket.js");
            }
        });
    });
</script>
<div id="absolute">green (absolute @import)</div>
<div id="relative">blue (relative @import)</div>
</body>
</html>