>
            <p>&#215; Responsive</p>
            <pre>
data-width="80%"
            </pre>
            <div style="width: 30%; border: 3px dashed; margin-bottom: 20px">
                <i>
                    Current div width is 30% of window width.<br>
                    Knob width is 80% of current div.<br>
                    Knob width is 80% of 30% of window width.<br>
                    Test resizing window.
                </i>
                <br>
                <br>
                <input cla