dles mixed padding, margin, border, box-sizing, rows, groups</li>
                <li>Handles images and responsive layouts by automatically updating when needed</li>
                <li>To test, apply different combinations of options below to try different edge case scenarios</li>
                <li>Resize the browser to test the responsive updating</li>
            </ul>

            <div class="controls">
                <div class="checkbox">
                    <label>
                        <input 