fix blur thing for external link

components/Navbar.tsx

@@ -75,7 +75,16 @@ function NavItem(props: NavLink) {
   return (
     <>
       {externalLink ? (
-        <a href={props.route} target="_blank" rel="noopener noreferrer">
+        <a
+          href={props.route}
+          target="_blank"
+          rel="noopener noreferrer"
+          onClick={() => {
+            if (document.activeElement instanceof HTMLElement) {
+              document.activeElement.blur();
+            }
+          }}
+        >
           {props.name}
         </a>
       ) : (