Update README.md

Here's a concise and professional description for your README.md:

CODEX61814 is a personal portfolio project designed to "CREATE OPTIMIZED DIGITAL EXCELLENCE EXPONENTIALLY WITH FAHAD". It showcases my web development skills, projects, and achievements through a modern, responsive, and visually engaging design.

This portfolio emphasizes creativity, efficiency, and high-quality user experience, reflecting my commitment to delivering exceptional digital solutions. Visit the live portfolio at codex61814.xyz.

README.md

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 # CODEX61814  
 
+![Portfolio Screenshot](https://github.com/imthecode777/codex61814/blob/main/img/nav_logo.png)
+
 [![Portfolio Link](https://img.shields.io/badge/Portfolio-Website-blue?style=flat-square)](https://codex61814.xyz/)  
 ![GitHub last commit](https://img.shields.io/github/last-commit/imthecode777/codex61814)  
 ![GitHub repo size](https://img.shields.io/github/repo-size/imthecode777/codex61814)