<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Basic Calculator</title>
</head>
<body>
  <div id='calculator'>

    <div id='response-pane'>
    </div>

    <div id='modifier-buttons'>
      <button class='modifiers unsupported'>AC</button>
      <button class='modifiers unsupported'>&plusmn;</button>
      <button class='modifiers unsupported'>%</button>
    </div>

    <div id='operation-buttons'>
      <button class='operations'>&divide;</button>
      <button class='operations'>&times;</button>
      <button class='operations'>-</button>
      <button class='operations'>+</button>
      <button class='operations'>=</button>
    </div>

    <div id='digit-buttons'>
      <button class='digits'>0</button>
      <button class='digits'>1</button>
      <button class='digits'>2</button>
      <button class='digits'>3</button>
      <button class='digits'>4</button>
      <button class='digits'>5</button>
      <button class='digits'>6</button>
      <button class='digits'>7</button>
      <button class='digits'>8</button>
      <button class='digits'>9</button>
      <button class='digits'>.</button>
    </div>

  </div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Basic Calculator</title>
  <script src='index.js' defer></script>
</head>
<body>
  <div id='calculator'>
    
    <div id='modifier-buttons'>
      <button class='modifiers unsupported'>AC</button>
      <button class='modifiers unsupported'>&plusmn;</button>
      <button class='modifiers unsupported'>%</button>
    </div>
    
    <div id='operation-buttons'>
      <button class='operations' value='division'>&divide;</button>
      <button class='operations' value='multiplication'>&times;</button>
      <button class='operations' value='subtraction'>-</button>
      <button class='operations' value='addition'>+</button>
      <button class='operations' value='answer'>=</button>
    </div>
    
    <div id='digit-buttons'>
      <button class='digits'>0</button>
      <button class='digits'>1</button>
      <button class='digits'>2</button>
      <button class='digits'>3</button>
      <button class='digits'>4</button>
      <button class='digits'>5</button>
      <button class='digits'>6</button>
      <button class='digits'>7</button>
      <button class='digits'>8</button>
      <button class='digits'>9</button>
      <button class='digits'>.</button>
    </div>
    
        <div id='response-pane'>
        </div>
    
  </div>
</body>
</html>
Add values to operations buttons to make logic DRYer
Add values to operations buttons to make logic DRYer
