index.html

<!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>Churrascômetro</title>
    <link href="style.css" rel="stylesheet" />
</head>

<body>
    <div class="container">
        <h1>Churrascômetro</h1>
        <input id="adultos" name="adultos" type="number" placeholder="Adultos" />
        <input id="criancas" name="criancas" type="number" placeholder="Crianças" />
        <input id="duracao" name="duracao" type="number" placeholder="Duração (h)" />
        <button onclick="calcular()">Calcular</button>
        <div id="resultado"></div>
    </div>
    <img id="imagem" src="./images/churrasco.jpg" width=700px>
    <script src="script.js"></script>
</body>

</html>