modal app/modal.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>mModal app</title>
    <link rel="stylesheet" href="modal.css">
    <link
      rel="stylesheet"
      href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.14.0/css/all.min.css"
    />
</head>
<body>
    <div class="main">
        <div class="content">
            <div class="o-content">
                <h1 class="title">Modal Project</h1>
                <button class="open">OPEN MODAL</button>
            </div>
            <div class="i-content">
                <h2>Model Content</h2>
                <button class="close"><i class="fas fa-times"></i></button>
                
            </div>
        </div>
    </div>

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