diff --git a/assets/scss/live-detail.scss b/assets/scss/live-detail.scss
index 9c17af462..1c5aa419e 100644
--- a/assets/scss/live-detail.scss
+++ b/assets/scss/live-detail.scss
@@ -6,6 +6,10 @@
   font-size: 16px;
   line-height: 2.29;
   color: #36435c;
+
+  iframe {
+    max-width: 100%;
+  }
 }
 
 .md-body h2 {