diff --git a/app/index/view/pc/topic_nas/help.html b/app/index/view/pc/topic_nas/help.html
index e0752832..12c373e3 100644
--- a/app/index/view/pc/topic_nas/help.html
+++ b/app/index/view/pc/topic_nas/help.html
@@ -136,7 +136,7 @@
                     $('#dropdown').hide();
                 }
             });
-            $('.nhlplxwmit:not(:first)').hover(function () {
+            $('.nhlplxwmit').hover(function () {
                 // 当鼠标移入时，显示.lxewmimg 并隐藏.lximg
                 var lxe = $(this).find('.lxewmimg');
                 var lxi = $(this).find('.lximg');
diff --git a/public/static/index/pc/css/aboutus_introduction.css b/public/static/index/pc/css/aboutus_introduction.css
index d480acdd..d3433e92 100755
--- a/public/static/index/pc/css/aboutus_introduction.css
+++ b/public/static/index/pc/css/aboutus_introduction.css
@@ -103,6 +103,7 @@
   overflow: hidden;
   position: relative;
   text-align: center;
+  z-index: 10;
 }
 /* .orico_Page_introduction .introductionMain .iotb_part2 .fdimgs.fdimgs1 .fdimgs-div {
   height: 405px;
diff --git a/public/static/index/pc/css/orico_header.css b/public/static/index/pc/css/orico_header.css
index 42177830..50b565ff 100755
--- a/public/static/index/pc/css/orico_header.css
+++ b/public/static/index/pc/css/orico_header.css
@@ -174,6 +174,7 @@
 .header-PC #header .nav2 .navItem .navItemConten1 li a {
   cursor: pointer;
   padding-left: 0;
+  white-space: nowrap;
 }
 .header-PC #header .nav2 .navItem .navItemConten1 li a:hover {
   color: #004bfa;
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%;