diff --git a/packages/navBar/index.css b/packages/navBar/index.css
index 81fb139..62721d8 100644
--- a/packages/navBar/index.css
+++ b/packages/navBar/index.css
@@ -17,7 +17,20 @@
   vertical-align: middle;
 }
 .zui-nav-bar--border-bottom {
-  border-bottom: 0.0625rem solid #E2E4EA;
+  position: relative;
+}
+.zui-nav-bar--border-bottom:after {
+  content: '';
+  position: absolute;
+  left: 0;
+  top: 0;
+  background: #E2E4EA;
+  right: 0;
+  height: 1px;
+  -webkit-transform: scaleY(0.5);
+  transform: scaleY(0.5);
+  -webkit-transform-origin: 0 0;
+  transform-origin: 0 0;
 }
 .zui-nav-bar--fixed {
   position: fixed;
--
libgit2 0.21.0