diff --git a/css/index.css b/css/index.css
index 16dd5ea..c542c7f 100644
--- a/css/index.css
+++ b/css/index.css
@@ -38,6 +38,7 @@
   padding: 0 20px;
   cursor: pointer;
   position: relative;
+  z-index: 10;
 }
 .header-box .search .input {
   height: 48px;
diff --git a/css/index.less b/css/index.less
index 3ee14ef..357e4c3 100644
--- a/css/index.less
+++ b/css/index.less
@@ -41,6 +41,7 @@
         padding: 0 20px;
         cursor: pointer;
         position: relative;
+        z-index: 10;
 
         .input {
             height: 48px;