diff --git a/less/topic.less b/less/topic.less
index 2d7dff0..85c0d78 100644
--- a/less/topic.less
+++ b/less/topic.less
@@ -257,11 +257,7 @@
 			}
 
 			iframe, .img-responsive {
-				width: 85%;
-			}
-
-			iframe, img {
-				max-width: 400px;
+				max-width: 85%;
 			}
 
 			.toggle {