="If 'background-repeat' is 'round' for one dimension only and if 'background-size' is 'auto' in the other dimension, then the other dimension is sclaed so that the original aspect ratio is restored." />
        <style type="text/css">
            .reference
            {
                width: 1in;
                height: 1in;
                background: url("../support/cat.png") no-repeat;
                background-size: 80px 80px;
            }
            .test1
            {
                width: 400