diff --git a/en_us/css/custom.css b/en_us/css/custom.css
index e9f8433a..e69de29b 100644
--- a/en_us/css/custom.css
+++ b/en_us/css/custom.css
@@ -1,3 +0,0 @@
-.viki-navbar {
-    background-color: #94070A;
-}
diff --git a/zh_cn/css/custom.css b/zh_cn/css/custom.css
index e9f8433a..e69de29b 100644
--- a/zh_cn/css/custom.css
+++ b/zh_cn/css/custom.css
@@ -1,3 +0,0 @@
-.viki-navbar {
-    background-color: #94070A;
-}