diff --git a/public/static/index/pc/css/product_detail.css b/public/static/index/pc/css/product_detail.css
index 0da9d4e7..e53cc1ce 100755
--- a/public/static/index/pc/css/product_detail.css
+++ b/public/static/index/pc/css/product_detail.css
@@ -596,6 +596,7 @@
   background: url(/static/index/pc/images/fl.png);
   left: 90px;
   margin-top: -24.5px;
+  z-index: 1;
 }
 
 .scrollbutton.smallImgDown,
@@ -603,6 +604,7 @@
   background: url(/static/index/pc/images/rh.png);
   right: 0px;
   margin-top: -24.5px;
+  z-index: 1;
 }
 .orico_Page_prdetail .glcpmain {
 	width: 100%;