               </fieldset>
                <fieldset class="control-group">
                    <legend>Input Thrust (MN)</legend><input type="number" step="0.1" name="thrust" />
                </fieldset>
                <fieldset class="control-group">
                    <legend>Input Top Speed (m/s)</legend><input type="number" step="0.1" name="top-speed" />
                </fieldset>
                <fieldset class="control-group">
                    <legend>Input Mass (Tonne)</legend><input