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