diff --git a/cdm.css b/cdm.css
index b793ee058..021135dfc 100644
--- a/cdm.css
+++ b/cdm.css
@@ -155,3 +155,7 @@ div.cdmContentInner p {
 .Unread div.cdmHeader {
 	font-weight : bold;
 }
+
+div.cdmContentInner iframe {
+	min-width : 50%;
+}
diff --git a/tt-rss.css b/tt-rss.css
index 99cd9958b..a6c511967 100644
--- a/tt-rss.css
+++ b/tt-rss.css
@@ -1193,3 +1193,7 @@ div.postContent p {
 .Unread div.hlTitle {
 	font-weight : bold;
 }
+
+div.postContent iframe {
+	min-width : 50%;
+}