How to Use
Save the three code files as index.html, styles.css, and script.js in the same folder.
Open index.html in a modern web browser.
Use the buttons to perform calculations.
CE clears the display.
OFF turns off the display temporarily.
CORRECT removes the last character.
GT stores the current result in memory.
MU recalls the value from memory.
Replay shows the history of results.
Standard operators (+, -, /, *, %, =) work as expected.