adjust z-index

src/client/styles/scss/_layout.scss

@@ -64,7 +64,7 @@
     position: fixed;
     right: 25%;
     bottom: 25px;
-    z-index: 1039;
+    z-index: 1;
     display: block;
     padding: 5px 8px;
     font-size: 0.8em;

src/client/styles/scss/_search.scss

@@ -210,7 +210,7 @@
 .search-page-input {
   position: sticky;
   top: 0;
-  z-index: 99;
+  z-index: 1;
 
   // for sticky layout
   padding-top: 15px;