diff --git a/theme/standard/style/css3.css b/theme/standard/style/css3.css
index cb6ab17b6ad..85ba9261041 100644
--- a/theme/standard/style/css3.css
+++ b/theme/standard/style/css3.css
@@ -85,18 +85,9 @@ table.minicalendar {
 .generalboxcontent,
 .informationbox,
 .informationboxcontent {
-  -moz-border-radius-topleft: 3px;
-  -moz-border-radius-topright: 3px;
-  -moz-border-radius-bottomleft: 15px;
-  -moz-border-radius-bottomright: 15px;
-  -webkit-border-top-left-radius: 3px;
-  -webkit-border-top-right-radius: 3px;
-  -webkit-border-bottom-left-radius: 15px;
-  -webkit-border-bottom-right-radius: 15px;
-  border-top-left-radius: 3px;
-  border-top-right-radius: 3px;
-  border-bottom-left-radius: 15px;
-  border-bottom-right-radius: 15px;
+    -webkit-border-radius: 3px;
+       -moz-border-radius: 3px;
+            border-radius: 3px;
 }
 
 .editing .block_course_summary .content {