Update README.md

Author: Sumandeep-Kaur

Navbars/Side_Navbar_02/README.md

@@ -4,3 +4,5 @@
 <p align="left"> <a href="https://www.w3.org/html/" target="_blank"> <img src="https://raw.githubusercontent.com/devicons/devicon/master/icons/html5/html5-original-wordmark.svg" alt="html5" width="40" height="40"/> </a> <a href="https://www.w3schools.com/css/" target="_blank"> <img src="https://raw.githubusercontent.com/devicons/devicon/master/icons/css3/css3-original-wordmark.svg" alt="css3" width="40" height="40"/> </a>   </p>
 
 ## Preview
+https://user-images.githubusercontent.com/77191007/147401842-8fa6a6e8-efc9-4927-89d0-43d384e9f7a2.mp4
+