<!DOCTYPE html>
<html lang="pt-BR">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Botão Vermelho</title>
<style>
body {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
background-color: #f0f0f0;
}
button {
background-color: red;
color: white;
padding: 12px 24px;
font-size: 16px;
border: none;
border-radius: 4px;
cursor: pointer;
}
</style>
</head>
<body>
<button>Botão Vermelho</button>
</body>
</html>