ption value="column">column</option>
                            <option value="column-reverse">column-reverse</option>
                        </select>
                    </div>
                    
                    <div class="control-item">
                        <label>flex-wrap</label>
                        <select id="flexWrap" onchange="updateStyles()">
                            <option value="nowrap">nowrap</option>
                            <option value="wrap">wrap</option>
           