's'

app/components/Header.tsx

@@ -0,0 +1,18 @@
+export default function Header() {
+  return (
+    <header className="bg-white shadow-sm">
+      <div className="container mx-auto px-4 py-3 flex justify-between items-center">
+        <div className="flex items-center">
+          <div className="hidden md:flex items-center space-x-4">
+            <a href="https://github.com/tianyaxiang/CoderNavigation" 
+               target="_blank" 
+               rel="noopener noreferrer"
+               className="text-gray-600 hover:text-gray-900">
+              <i className="fa-github"></i> GitHub
+            </a>
+          </div>
+        </div>
+      </div>
+    </header>
+  )
+}