  </select>
                    </div>
                    
                    <div class="control-item">
                        <label>align-content</label>
                        <select id="alignContent" onchange="updateStyles()">
                            <option value="stretch">stretch</option>
                            <option value="flex-start">flex-start</option>
                            <option value="flex-end">flex-end</option>
                            <option value="center">center</o