<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculadora</title>
<style>
.fundo{
background-image: linear-gradient(45deg,black, crimson);
height: 100vj;
color: white;
font-family: Arial, Helvetica, sans-serif;
}
.calculadora{
position: absolute;
background-color: rgb(0, 0, 0);
top: 50%;
left: 50%;
transform: translate(-50%,-50);
border-radius: 15px;
padding: 15px;
}
</style>
</head>
<body>
<div class="fundo">
<h1>Calculadora Básica</h1>
<div class= "calculadora">
<h1>Calculadora</h1>
<p id= "resultado"></p>
<table>
<tr>
<td><button>C</button></td>
<td><button><</button></td>
<td><button>/</button></td>
<td><button>X</button></td>
</tr>
<tr>
<td><button>7</button></td>
<td><button>8</button></td>
<td><button>9</button></td>
<td><button>-</button></td>
</tr>
<tr>
<td><button>4</button></td>
<td><button>5</button></td>
<td><button>6</button></td>
<td><button>+</button></td>
</tr>
<tr>
<td><button>1</button></td>
<td><button>2</button></td>
<td><button>3</button></td>
<td rowspan="2"><button>=</button></td>
</tr>
<tr>
<td colspan="2"><button>0</button></td>
<td><button>.</button></td>
</tr>
</table>
</div>
</div>
</body>
</html>