diff --git a/theme-arc-blue.css b/theme-arc-blue.css
index 0ac0273..ecb6e29 100644
--- a/theme-arc-blue.css
+++ b/theme-arc-blue.css
@@ -1185,4 +1185,7 @@ swagger-ui .info li, .swagger-ui .info p, .swagger-ui .info table {
 }
 .ui.wide.popup.fixed {
     background: #000;
-}
\ No newline at end of file
+}
+.ui.top.attached.header {
+    background: #400 !important;
+}