fix: Product selector positioning + z-index

Author: lamATnginx

assets/css/v2/style.css

@@ -211,6 +211,7 @@ nav {
   display: grid;
   grid-template-columns: var(--text-content-width-iphone-13) 1fr;
   grid-template-rows: var(--breadcrumb-max-height) 1fr;
+  z-index: 1;
 }
 
 .docs-container {
@@ -221,6 +222,7 @@ nav {
   display: flex;
   flex-direction: column;
   position: relative;
+  z-index: 2;
 }
 
 #searchbox {
@@ -506,7 +508,7 @@ atomic-search-layout atomic-layout-section[section="search"] {
   position: absolute;
   top: 0;
   min-width: 80%;
-  margin-top: 1rem;
+  margin-top: 7.375rem;
   margin-left: 44rem;
   padding: 1rem 1.5rem;
   background-color: white;