update

about.html

@@ -39,6 +39,11 @@
                             </p>
                         </div>
                     </div>
+                    <div style="margin-top: 30px;">
+                        <video style="width: 100%;" autoplay muted loop playsinline>
+                            <source src="./img/about/bt01.mp4" type="video/mp4">
+                        </video>
+                    </div>
                 </div>
 
             </div>