Ovveride theme CSS rule causing an unneeded overflow scroll in primar…

…y nav

_static/css/custom.css

@@ -65,6 +65,7 @@ body {
   background-color: var(--pst-color-primary);
 }
 
+
 /* Increase the maximum width for large displays. Still limited to prevent very long line length */
 @media (min-width:1200px) {
   .container,
@@ -91,6 +92,12 @@ body {
   margin-top:auto;
 }
 
+/* Override theme rule which was causing a scrollbar within the nav bar when not needed on local builds.
+May need adjusting on rtd for ethical ads*/
+.bd-sidebar-primary .sidebar-primary-items__end {
+  margin-top: inherit;
+}
+
 /* --------------------------------------
   Light theme specific formatting changes
   --------------------------------------- */
@@ -166,4 +173,4 @@ html[data-theme="dark"] .bd-article-container h3,
 html[data-theme="dark"] .bd-article-container h4
 html[data-theme="dark"] .bd-article-container h5 {
   color: var(--n8-deep-blue-color-high-contrast-dark);
-}
+}