diff --git a/src/components/BaseHead.astro b/src/components/BaseHead.astro
index a8dadd7..bc0fecd 100644
--- a/src/components/BaseHead.astro
+++ b/src/components/BaseHead.astro
@@ -121,3 +121,21 @@ const socialImageURL = new URL(ogImage ? ogImage : "/social-card.png", Astro.url
 </script>
 
 <meta content={Astro.generator} name="generator" />
+
+<style is:global>
+	html,
+	body {
+		width: 100%;
+	}
+	/* 确保所有图片不会溢出容器 */
+	img {
+		margin-left: auto;
+		margin-right: auto;
+		max-width: 100%;
+	}
+	iframe {
+		margin-left: auto;
+		margin-right: auto;
+		max-width: 100%;
+	}
+</style>