fix:优化产品页面样式，调整tab布局和滚动条样式

public/themes/dist_static/static/css/product.css

@@ -435,8 +435,12 @@ body.is-p-subnav .site-header {
   justify-content: center;
   gap: 5rem;
   border: 0;
+  overflow-x: auto;
+  -webkit-overflow-scrolling: touch;
+  scrollbar-width: none;
 }
 .p-spec__tab {
+  flex: 1;
   display: flex;
   flex-direction: column;
   align-items: center;
@@ -463,7 +467,6 @@ body.is-p-subnav .site-header {
 }
 .p-spec__tab-media {
   width: 7.5rem;
-  height: 7.5rem;
   display: flex;
   align-items: center;
   justify-content: center;
@@ -471,7 +474,6 @@ body.is-p-subnav .site-header {
 }
 .p-spec__tab-media img {
   width: auto;
-  max-width: 5rem;
   display: block;
 }
 .p-spec__tab-name {