Fleet UI: Update settings empty state (#45363)

frontend/components/EmptyState/EmptyState.stories.tsx

@@ -98,9 +98,10 @@ export const HeaderList: Story = {
 export const HeaderListWithButton: Story = {
   args: {
     variant: "header-list",
-    header: "Add your certificate authority (CA)",
-    info: "Help your end users connect to Wi-Fi or VPNs.",
-    primaryButton: <Button>Add CA</Button>,
+    header: "No certificate authorities",
+    info:
+      "Add a certificate authority (CA) to help end users connect to Wi-Fi or VPNs.",
+    primaryButton: <Button>Add certificate authority</Button>,
   },
 };
 

frontend/components/TabNav/_styles.scss

@@ -4,7 +4,6 @@
 // ManageControlsPage omits the key here and uses __fade (keyed by tab index)
 // so only top-level tab switches animate, not sub-route navigation.
 .tab-nav-routed-content {
-  margin-top: $gap-page-component; // Mirror .react-tabs__tab-panel--selected
   animation: fade-in 250ms ease-out;
 
   &__fade {