diff --git a/2020-ryusei/index.html b/2020-ryusei/index.html
index 85ce743..c046f55 100644
--- a/2020-ryusei/index.html
+++ b/2020-ryusei/index.html
@@ -43,7 +43,7 @@
       </a-assets>
       <a-videosphere src="#video" rotation="0 -130 0"></a-videosphere>
     </a-scene>
-    <iframe src="https://youtu.be/nXeIs3pDwq8" width="70vh" height="40vh"></iframe>
+    <iframe src="https://youtu.be/nXeIs3pDwq8" width="70vh" height="40vh" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
   </div>
   <h2>管理人</h2>
   <div class="maintext">