diff --git a/src/nav-bar/index.less b/src/nav-bar/index.less
index c684c026f..8fb25bc7f 100644
--- a/src/nav-bar/index.less
+++ b/src/nav-bar/index.less
@@ -37,6 +37,7 @@
   &__left,
   &__right {
     position: absolute;
+    top: 0;
     bottom: 0;
     display: flex;
     align-items: center;