<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <main>
        <button id="button-add-card">Add card</button>
        <br>
        <div id="canvas"></div>
    </main>
    <script src="main.js"></script>
</body>
</html>