diff -u b/core/themes/olivero/css/components/navigation/nav-primary-wide.pcss.css b/core/themes/olivero/css/components/navigation/nav-primary-wide.pcss.css
--- b/core/themes/olivero/css/components/navigation/nav-primary-wide.pcss.css
+++ b/core/themes/olivero/css/components/navigation/nav-primary-wide.pcss.css
@@ -149,7 +149,7 @@
       &:focus:before {
         height: 100%;
         top: 0;
-        left: calc(var(--sp) * -1);
+        left: calc(var(--sp0-5) * -1);
         transform: none;
       }