diff --git a/packages/vant-cli/site/mobile/components/DemoNav.vue b/packages/vant-cli/site/mobile/components/DemoNav.vue
index b5509c7e9..899d3ee6e 100644
--- a/packages/vant-cli/site/mobile/components/DemoNav.vue
+++ b/packages/vant-cli/site/mobile/components/DemoNav.vue
@@ -39,9 +39,10 @@ export default {
 <style lang="less">
 .demo-nav {
   position: relative;
+  display: flex;
+  align-items: center;
+  justify-content: center;
   height: 56px;
-  line-height: 56px;
-  text-align: center;
   background-color: #fff;
 
   &__title {