<!DOCTYPE html>
<html lang="pt-br">
<head>
<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>Alura Books</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
</body>
</html>
:root {
--cor-de-fundo: #C4C4C4;
}
body {
background-color: var(--cor-de-fundo);
}