Add GitHub repo size badge to README

Author: TranHuuDat2004

README.md

@@ -11,9 +11,12 @@ Welcome to the source code repository for my personal portfolio website, meticul
   <a href="https://tranhuudat2004.github.io/" target="_blank">
     <img src="https://img.shields.io/badge/Live-Demo-brightgreen?style=for-the-badge&logo=vercel" alt="Live Demo"/>
   </a>
-    <a href="https://github.com/TranHuuDat2004/tranhuudat2004.github.io/releases/latest" target="_blank">
+  <a href="https://github.com/TranHuuDat2004/tranhuudat2004.github.io/releases/latest" target="_blank">
     <img src="https://img.shields.io/github/v/release/TranHuuDat2004/tranhuudat2004.github.io?style=for-the-badge&logo=github" alt="Latest Release"/>
   </a>
+  <a href="https://github.com/TranHuuDat2004/Galactic-Guardian" target="_blank">
+    <img src="https://img.shields.io/github/repo-size/TranHuuDat2004/tranhuudat2004.github.io?style=for-the-badge&logo=github" alt="GitHub repo size"/>
+  </a>
 </p>
 
 ## ✨ Key Features
@@ -79,4 +82,4 @@ This portfolio has been rebuilt from the ground up to incorporate modern web fea
 
 <p align="center">
   Thank you for visiting my portfolio. I'm always open to connecting and discussing technology!
-</p>
+</p>