diff --git a/content.js b/content.js
index f4ddd65..84163f2 100644
--- a/content.js
+++ b/content.js
@@ -10,5 +10,5 @@ function findEmbedURL() {
 
 const container = document.getElementById("new-player");
 if (container) {
-  container.innerHTML = `<iframe src="${findEmbedURL()}" width="1280" height="1010"frameborder="0" marginwidth="0" marginheight="0" scrolling="no" style="border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%; max-height: 100%;" allowfullscreen>`;
+  container.innerHTML = `<iframe src="${findEmbedURL()}" width="1280" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" style="border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%; aspect-ratio: 1280 / 1010;" allowfullscreen>`;
 }
diff --git a/manifest.json b/manifest.json
index 9f47cef..03b65be 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 3,
   "name": "refined slideshare",
-  "version": "0.5",
+  "version": "0.6",
   "description": "make slideshare's user experience better",
   "permissions": [
     "activeTab"
diff --git a/package.json b/package.json
index 9618ca9..d36a73c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "refined-slideshare",
-  "version": "0.5.0",
+  "version": "0.6.0",
   "main": "index.js",
   "repository": "https://github.com/mkusaka/no-ad-slideshare.git",
   "author": "mkusaka <hinoshita1992@gmail.com>",