🔢 Online Calculator

A simple, responsive calculator built using HTML, CSS, and JavaScript.

This calculator supports basic math operations — addition, subtraction, multiplication, division, percentage — and includes keyboard support and a light/dark theme toggle.

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🌐 Live Demo

👉 Use the calculator here

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✨ Features

• ➕ Basic math operations (+, −, ×, ÷, %)
• 💡 Light/Dark theme toggle
• ⌨️ Keyboard support
• ❌ Input validation to avoid invalid expressions
• 📱 Mobile responsive design

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📁 Tech Stack

• HTML
• CSS (custom styling, no frameworks)
• JavaScript (vanilla)

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📸 Preview

💻 Desktop View

🌞 Light Mode

🌚 Dark Mode

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📱 Mobile View

🌞 Light Mode

🌚 Dark Mode

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🙋‍♀️ Author

Made with ❤️ by Shruti

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