diff --git a/trac/htdocs/main.css b/trac/htdocs/main.css
index fddffab..4ea3315 100644
--- a/trac/htdocs/main.css
+++ b/trac/htdocs/main.css
@@ -121,3 +121,7 @@ select, input[type="text"], input.textwidget, textarea {
 .milestone .info h2 em {
     color: #945973;
 }
+#tabs { 
+    -moz-border-radius: 5px;
+    -webkit-border-radius: 5px;
+}