video fullscreen on orientation change to landscape

docs/.vitepress/config.mts

@@ -9,6 +9,15 @@ export default defineConfig({
   title: "ko-grammar",
   description: "Korean grammar edited",
   lang: "ko-KR",
+  head: [
+    [
+      "script",
+      {
+        async: "async",
+        src: "https://www.youtube.com/iframe_api",
+      },
+    ],
+  ],
   themeConfig: {
     socialLinks: [
       { icon: "github", link: "https://git.polv.cc/polv/ko-grammar" },