progress&gt;&lt;/progress&gt;</code>
                        <progress value="70" max="100"></progress>
                        <progress></progress>
                    </div>

                    <div>
                        <code>&lt;dialog&gt;&lt;/dialog&gt;</code>
                        <br />
                        <br />
                        <button id="show-demo-dialog">Open dialog</button>
                        <dialog id="demo-dialog">
                            <h2 data-no-heading-level 