diff --git a/style.css b/style.css
index 5e2e3ff..b1ffc0a 100644
--- a/style.css
+++ b/style.css
@@ -1158,8 +1158,9 @@ COMPONENTS
     margin-top: 0;
 }
 
-.st-article .img-responsive {
-    width: 100%;
+.st-article .img-responsive,
+.st-article iframe {
+    max-width: 100%;
 }
 
 .st-article-section-related-articles {