Performance tunning

Author: vishal6268

index.html

@@ -188,7 +188,7 @@ <h3>Beginner ---> Advance </h3>
         </section>
       </nav>
       <div class="join-community-wrapper">
-        <a href="http://github.com/techquanta" class="join-community" target="_blank">
+        <a href="http://github.com/techquanta" class="join-community" target="_blank" rel="noopener">
           🤝 Join Our Community
         </a>
       </div>