<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Calculator</title>
<link rel="stylesheet" href="calculator.css">
</head>
<body>
<div class="">
8
</div>
<div>
<button>7</button>
<button>8</button>
<button>9</button>
<button>+</button>
<br/>
<button>4</button>
<button>5</button>
<button>6</button>
<button>−</button>
<br/>
<button>1</button>
<button>2</button>
<button>3</button>
<button>×</button>
<br/>
<button>0</button>
<button>=</button>
<button>÷</button>
<br/>
</div>
</body>
</html>