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>Pop up blur model</title>
    <link rel="stylesheet" href="style.css">
</head>

<body>
    <div class="content">
        <h1 class="content-title">
            Black cat in the dark corner
        </h1>
        <img src="cat.jpg" alt="" class="image">
        <p class="description">
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Ut eveniet aut eligendi delectus debitis vero,
            provident mollitia dignissimos modi qui optio cupiditate quo beatae soluta veniam iste voluptatibus, sequi
            fugit?
        </p>
        <button class="popup-btn" onclick="toggle()">
            Read more
        </button>
    </div>
    <div class="popup-model">
        <h1 class="model-title">
            Thank You
        </h1>
        <p class="description">
            Please don't forget to subscribe the channel and click the like button.
        </p>
        <button class="close" onclick="toggle()">
            OK
        </button>
    </div>
    <script src="script.js"></script>
</body>

</html>