in the background positioning area, and the width of the background image is rescaled to 20% (50px in this test) of the background area.">
    <style>
        #ref-overlapped-red {
            background-color: red;
            height: 150px;
            width: 50px;
        }
        #test-overlapping-square {
            background-image: url(support/100x100-blue-and-orange.png);
            background-repeat: no-repeat round;
            background-size: 20% 30%;
            bottom: 150px;
            he