Add two new comments from the accessibility review. (#149)

Posture changes announcements and added specific
paragraph invited developers to try their site
with assistive technologies.

Patch by Christopher Nguyen (@chris480).

Closes #147

index.html

@@ -765,6 +765,21 @@ <h2>
           other needs but allowing them to choose the UI that fits their needs
           better. Ideally it is preferred to make the UI configurable.
         </li>
+        <li>
+          <strong>Content announcements for assistive devices:</strong>
+          Use ARIA live regions to announce significant layout changes dynamically. 
+          For instance, when a fold changes the layout of a webpage, ensure that screen
+          readers announce these changes to users. For example, if a video player is moved
+          to the top of the screen and comments to the bottom, an announcement like
+          "Video player moved to the top screen, comments moved below the fold" can help
+          users navigate better.
+        </li>
+        <li>
+          <strong>Assistive technology compatibility:</strong>
+          Conduct thorough testing with various assistive technologies to ensure
+          compatibility and proper communication of changes when different postures
+          are reached.
+        </li>
       </ul>
     </section>
     <section>