exercises/class4/index.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Calculator</title>
  <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
  <div class=calculator>
    <section class=display>
      <div></div>
      <div></div>
      <div></div>
    </section>
    <section class=buttons>
      <button class=operator>AC</button>
      <button class=operator>+/-</button>
      <button class=operator>%</button>
      <button class=operator>x</button>
      <button>7</button>
      <button>8</button>
      <button>9</button>
      <button class=operator>/</button>
      <button value=4>4</button>
      <button value=5>5</button>
      <button value=6>6</button>
      <button class=operator>-</button>
      <button value=1 id=button1>1</button>
      <button value=2>2</button>
      <button value=3>3</button>
      <button class=operator>+</button>
      <button value=0 class=double>0</button>
      <button>,</button>
      <button class=equals>=</button>
    </section>
  </div>
  <script src="script.js"></script>
</body>
</html>