index.html

<!DOCTYPE html>
<html lang="en">
<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>Breakout game</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <h1>Breakout!</h1>

    <button id="rules-btn" class="btn rules-btn">Show Rules</button>
    <div id="rules" class="rules">
        <h2>How to play!</h2>
        <p>Use you right and left keys to move the paddle to bounce the ball up  and break the blocks.</p>
        <p>Fi you miss the ball, your score and the blocks will reset.</p>

        <button id="close-btn" class="btn">
            Close
        </button>
    </div>

    <canvas id="canvas" width="800" height="600"></canvas>


    <script src="/script.js"></script>
</body>
</html>