A simple, responsive calculator built using HTML, CSS, and JavaScript.
It supports basic arithmetic operations and keyboard input.

---

🚀 Features

• Addition, subtraction, multiplication, division
• Decimal number support
• Clear (C) and backspace (←) functions
• Keyboard input support
• Responsive design (mobile-friendly)
• Error handling (division by zero)

---

🛠️ Technologies Used

• HTML5
• CSS3 (Grid & Responsive Design)
• Vanilla JavaScript (DOM manipulation)

---

📂 Project Structure

calculator-app
├── index.html
├── style.css
├── script.js
└── README.md

---

▶️ How to Run the Project

1. Download or clone the repository
2. Open index.html in any modern browser
3. Start calculating 🎯

---

⌨️ Keyboard Support

Key	Action
0–9	Number input
+ - * /	Operators
Enter	Calculate
Backspace	Delete
Esc	Clear

---

📌 Future Improvements

• Scientific calculator functions
• Calculation history
• Dark/Light mode toggle

---

👩‍💻 Author

Ritisha Chaurasia
Frontend / MERN Stack Developer