diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index a6d4bcb63..1d7b9293a 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -2773,3 +2773,4 @@ div.repos_explain{
 	padding-top: 20px;
 	padding-bottom: 20px;
 }
+img{max-width: 100%;}
diff --git a/public/stylesheets/public.css b/public/stylesheets/public.css
index 031b73afb..3e8dbb641 100644
--- a/public/stylesheets/public.css
+++ b/public/stylesheets/public.css
@@ -422,3 +422,4 @@ a.box_close{background:url(../images/img_floatbox.png) -22px 0 no-repeat;}
 
 /*文本左对齐*/
 .tl{text-align: left;}
+img{max-width: 100%;}