diff --git a/trac/htdocs/main.css b/trac/htdocs/main.css
index 11c1f59..3e0246e 100644
--- a/trac/htdocs/main.css
+++ b/trac/htdocs/main.css
@@ -12,6 +12,10 @@ body {
    border-right: 2px solid #945973;
    border-bottom: 2px solid #945973;
 }
+#main {
+    -moz-border-radius-topleft: 5px;
+    -moz-border-radius-topright: 5px;
+}
 #mainnav {
    border-top: 1px solid #88AA77;
 }