Calculator Web App 🧮

A simple, modern, and fully responsive calculator built using HTML, CSS, and JavaScript only — no frameworks, no libraries!

Just like a real pocket calculator: clean design, basic arithmetic operations, and works perfectly on mobile & desktop.

Live Demo: https://YOUR-USERNAME.github.io/YOUR-REPO-NAME/
(ya agar GitHub Pages use nahi kiya to link remove kar dena)

Features

• Basic operations: Addition (+), Subtraction (−), Multiplication (×), Division (÷)
• Clear (C) & All Clear (AC) functionality
• Delete last digit (← / backspace)
• Percentage (%) calculation
• Decimal point support
• Keyboard support (numbers, operators, Enter = calculate, Backspace = delete, Escape = clear)
• Responsive design — looks good on phones, tablets, laptops
• Nice modern UI with hover effects & button feedback
• Error handling (division by zero, invalid input)