diff --git a/packages/vant-cli/site/desktop/components/Header.vue b/packages/vant-cli/site/desktop/components/Header.vue
index b987ac65d..95fd21cd9 100644
--- a/packages/vant-cli/site/desktop/components/Header.vue
+++ b/packages/vant-cli/site/desktop/components/Header.vue
@@ -140,6 +140,7 @@ export default {
 
 .van-doc-header {
   width: 100%;
+  background-color: #001938;
   user-select: none;
 
   &__top {
@@ -148,7 +149,6 @@ export default {
     height: @van-doc-header-top-height;
     padding: 0 @van-doc-padding;
     line-height: @van-doc-header-top-height;
-    background-color: #001938;
 
     &-nav {
       flex: 1;