Update README.md

Author: 4sf21cs116

README.md

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-# shopping_cart_html.js.css
+# 🛒 Shopping Cart – HTML, CSS & JavaScript
+
+A simple and functional **shopping cart** web application built using  **HTML**, **CSS**, and **JavaScript**. This project demonstrates  cart features like product listing and dynamic total calculation.
+
+---
+
+## ✅ Features
+
+### 🛍️ Product Display
+- Static list of products with name, price, and image
+- Add-to-cart buttons for each product
+
+### 🛒 Cart Management
+- Add items to the cart dynamically
+- Calculate and display total price automatically
+
+### 🎨 UI & Design
+- Clean layout with grid-based product section
+- Responsive and minimal design using **CSS**
+
+### ⚙️ Tech Stack
+
+- **Frontend:** HTML, CSS, JavaScript 
+- No external dependencies
+- Pure DOM manipulation and logic
+
+
+