create a responsive calculator in html css javascript

creating a responsive calculator using html, css, and javascript is a great project for honing your web development skills. below, i'll walk you through the process of building a simple calculator that can perform basic arithmetic operations.

step 1: structure the html

first, we need to create the basic structure of our calculator using html. this will include a display area and buttons for numbers and operations.

```html
!doctype html
html lang="en"
head
meta charset="utf-8"
meta name="viewport" content="width=device-width, initial-scale=1.0"
titleresponsive calculator/title
/head
body
div class="calculator"
input type="text" id="display" disabled /
div class="buttons"
button onclick="cleardisplay()"c/button
button onclick="appendtodisplay('/')"//button
button onclick="appendtodisplay('*')"*/button
button onclick="appendtodisplay('-')"-/button
button onclick="appendtodisplay('7')"7/button
button onclick="appendtodisplay('8')"8/button
button onclick="appendtodisplay('9')"9/button
button onclick="appendtodisplay('+')"+/button
button onclick="appendtodisplay('4')"4/button
button onclick="appendtodisplay('5')"5/button
button onclick="appendtodisplay('6')"6/button
button onclick="calculateresult()"=/button
button onclick="appendtodisplay('1')"1/button
button onclick="appendtodisplay('2')"2/button
button onclick="appendtodisplay('3')"3/button
button onclick="appendtodisplay('0')"0/button
/div
/div
/body
/html
```

step 2: style with css

next, we will style the calculator using css to make it visually appealing and responsive.

```css

body ...

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