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">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/skeleton/2.0.4/skeleton.min.css" integrity="sha512-EZLkOqwILORob+p0BXZc+Vm3RgJBOe1Iq/0fiI7r/wJgzOFZMlsqTa29UEl6v6U6gsV4uIpsNZoV32YZqrCRCQ==" crossorigin="anonymous" referrerpolicy="no-referrer" />
    <title>Number Guesser</title>
    <style>
        /* Removing the up and down spinners/arrows of input field */

        input::-webkit-outer-spin-button,
        input::-webkit-inner-spin-button 
        {
            -webkit-appearance: none;
            margin: 0;
        }
    </style>
</head>
<body>
    <!-- Container class centers the content -->
    <div class="container">
        <div id="game">
            <!-- Game id has the markup for the game -->
            <h1>Number Guesser</h1>
            <p>Guess a number between <span class="min"></span> and <span class="max"></span></p>
            <!-- This input field stores the user input -->
            <input type="number" id="user_input" placeholder="Enter your guess...">
            <!-- button to check user's guess -->
            <button class="button button-primary" id="submit_btn">Submit</button>
            <!-- Messages are shown on user's screen. Manipulated in JavaScript -->
            <p class="message"></p>
        </div>    
    </div>

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